Ep 47 — Mainstream FTIR Brand Comparison (Part 2): PerkinElmer, Shimadzu, JASCO, Agilent and Domestic Instruments
Series: Infrared Spectroscopy Encyclopedia: From Principles to Practice
Chapter: Chapter 5 · Instruments and Tools — Brands and Selection (First Part)
Audience: Instrument procurement decision-makers, laboratory managers, technical leaders, procurement professionals concerned with cost-effectiveness and domestic alternatives
Prerequisites: Ep 46 (Comparison of Thermo and Bruker), Ep 11–12 (FTIR principles and interferometers), Ep 17 (Basic operation procedures)
Reading time: Approx. 50 minutes
Introduction: Beyond the "Two Giants", Who Else Is in the Market?
In the previous episode, we reviewed Thermo Fisher and Bruker, which together dominate half of the global mid-to-high-end market. But the FTIR market is far more than these two: PerkinElmer's optical heritage, Shimadzu's cost-effectiveness, JASCO's high-speed scanning, Agilent (formerly Varian)'s microanalysis strengths, and the rapidly emerging domestic instruments (Tianjin Port East, Beijing Rayleigh, etc.) together form a more complete market landscape.
"No single vendor offers the best solution for every application; the optimal choice depends on sample type, throughput, budget, and the existing analytical infrastructure of the laboratory."
—— Chalmers J M, Griffiths P R (eds.). Handbook of Vibrational Spectroscopy, Wiley [1]
This episode will examine these five players one by one and conclude with a comprehensive comparison table covering the six major camps, laying the groundwork for the next episode (Ep 48: Purchasing Guide).
1. PerkinElmer: The "Old Aristocrat" with Pure Optical Pedigree
1.1 Brand History
PerkinElmer's (PE) FTIR lineage traces back to the Perkin-Elmer Corporation—founded in 1937 by Richard Perkin and Charles Elmer, itself a pioneer in infrared spectroscopy. As early as the 1940s, PE launched the world's first commercial infrared spectrophotometer (Model 12), making it an early important player in dispersive IR [2]. Subsequently, PE's IR business underwent several mergers and reorganizations: in the 1990s, it integrated some optical assets from UK-based Graseby Specac; in the 2010s, it collaborated with UK-based Renishaw in Raman/IR combined imaging. It should be noted that PE's "analytical instruments" business underwent internal restructuring between 2017–2023, and the FTIR product line has always continued the Spectrum series naming [2][3].
1.2 Main Product Lines
| Model | Positioning | Typical Resolution | SNR (Peak-to-Peak) | Weight | Typical Applications |
|---|---|---|---|---|---|
| Spectrum Two | Entry-level/Teaching | Better than 0.5 cm⁻¹ | 30,000:1 | 4.5 kg | QC, teaching, portable |
| Spectrum 3 | Routine Analysis | Better than 0.25 cm⁻¹ | 55,000:1 | 12 kg | QC, method development |
| Frontier | Research Grade | Better than 0.1 cm⁻¹ | 80,000:1 | 18 kg | Research, NIR/FIR extension |
Table 1: PerkinElmer Main FTIR Product Line Overview (Data source: PerkinElmer product manual [3])
Spectrum Two is PE's portable entry-level model, weighing only 4.5 kg, positioned against the Thermo iS5 and Bruker ALPHA II. Its feature is a built-in touchscreen interface option, allowing independent operation without a computer, suitable for teaching and on-site QC [3].
Spectrum 3 is PE's routine workhorse, a new generation platform launched in 2020. Its optical design emphasizes optical baseline stability—compensating for ambient temperature drift through a precision temperature-controlled reference optical path, claiming baseline drift < 0.05% T over 24 hours [3].
Frontier is PE's research-grade flagship, supporting dual source, dual beamsplitter, dual detector configurations, expandable to NIR (15000–4000 cm⁻¹) and FIR (400–50 cm⁻¹). Its positioning competes with the Thermo iS50 and Bruker INVENIO R [3][4].
📷 PerkinElmer Frontier Research FTIR
Source: PerkinElmer official website [3]
1.3 Software Ecosystem: Spectrum Series
PE's accompanying software is the Spectrum™ software [3][4]:
- Spectrum Main Program: Known for its intuitive, user-friendly interface, operation logic close to Windows Explorer, very easy for beginners;
- Spectrum 10 / SpectrumTouch: Touchscreen interface, built into Spectrum Two;
- Spectrum Quant: Quantitative analysis platform;
- Spectrum Search: Library search module, compatible with major libraries like Sadtler and Aldrich;
- AssureID: Compliant workflow management for pharmaceutical GMP/21 CFR Part 11.
1.4 Spotlight Infrared Microscope
PE has unique advantages in Spotlight infrared microscopy [4]:
- Spotlight 200i: Uses a linear array detector, a compromise between single-point MCT and FPA in terms of imaging speed and sensitivity;
- Spotlight 400: Wide-field imaging, supporting large-area scanning from 50×50 μm to 1×1 mm;
- PE's macro focal plane array imaging has a strong reputation in forensic evidence and art analysis.
1.5 Strengths and Weaknesses
| Dimension | Strengths | Weaknesses |
|---|---|---|
| Optics | Excellent optical system, good baseline stability | Vacuum/FIR capability weaker than Bruker |
| Software | Spectrum UI friendly, easy to learn | Software update pace relatively slow |
| Micro IR | Spotlight linear array imaging is distinctive | FPA full array ecosystem weaker than Bruker |
| Market | Traditional user base in pharma, forensics | Overall market share declined in recent years |
| Service | Global service network well-established | Density of local engineers in China lower than Thermo |
Table 2: PerkinElmer FTIR Strengths and Weaknesses Overview (compiled from user feedback [1][4])
🔗 Further Reading: PE software ecosystem and third-party tools ftir.fun can interchange data formats via JCAMP-DX. For quick lookup of characteristic functional group frequencies, ftir.fun's ester C=O page and amine N-H page can serve as supplementary verification for Spectrum Search results.
2. Shimadzu: Cost-Effectiveness and the Victor in the Japanese Market
2.1 Brand History
Shimadzu Corporation was founded in 1875 and is one of the oldest scientific instrument manufacturers in Japan. Its founder Genzo Shimadzu is hailed as the "Father of Japanese Scientific Instruments." In 2002, Shimadzu employee Koichi Tanaka won the Nobel Prize in Chemistry (MALDI-TOF mass spectrometry), which further enhanced Shimadzu's reputation [5][6]. Shimadzu's FTIR business began in the 1980s. Leveraging its full-line layout in chromatography, spectroscopy, and mass spectrometry, it emphasizes "software unification" — all instruments share the LabSolutions platform.
2.2 Main Product Lines
| Model | Positioning | Typical Resolution | Signal-to-Noise Ratio | Weight | Typical Applications |
|---|---|---|---|---|---|
| IRSpirit | Portable/Teaching | Better than 1.0 cm⁻¹ | 20,000:1 | 5 kg | QC, Teaching, Field |
| IRAffinity-1S | Routine Analysis | Better than 0.5 cm⁻¹ | 50,000:1 | 13 kg | QC, Method Development |
| IRTracer-100 | Research Grade | Better than 0.25 cm⁻¹ | 60,000:1 | 17 kg | Scientific Research, Low Noise |
Table 3: Overview of Shimadzu's main FTIR product line (data source: Shimadzu product manual [6])
IRSpirit is Shimadzu's portable entry-level model, launched in 2020. The entire unit weighs about 5 kg and is compact (approx. 20×28×11 cm), supporting quick exchange of ATR and transmission sampling heads. Its highlight is the built-in automatic dehumidifier — through an internal desiccant cartridge and sealed optical path, it reduces the risk of moisture absorption by the KBr beamsplitter, making it a user-friendly design for teaching/QC in hot and humid environments [6].
IRAffinity-1S is Shimadzu's routine workhorse, positioned to compete with Nicolet iS20 and Bruker's standard platforms (historical model Tensor II; current counterparts include INVENIO, etc.). Its optical path uses a 30° incidence angle Michelson interferometer (Shimadzu patented design), claimed to increase throughput by about 15% [6].
IRTracer-100 is Shimadzu's research-grade model, focusing on high signal-to-noise ratio and rapid scanning: it comes standard with a high-speed scan mode (20 scans/sec), making it an entry-level research platform for kinetic studies. However, note that the IRTracer is weaker than Bruker VERTEX in far-infrared and vacuum capabilities [6][7].
📷 Shimadzu IRSpirit Portable FTIR
Source: Shimadzu official website [6]
2.3 Software Ecosystem: LabSolutions IR
Shimadzu's core differentiation is the LabSolutions unified platform [6][8]:
- LabSolutions IR: FTIR acquisition and processing software;
- LabSolutions Main Platform: Shares the same data management and compliance framework with Shimadzu HPLC, GC, UV-Vis;
- LabSolutions Insight: Chemometrics modeling module;
- Contamination Analysis Software: Dedicated module for automatic microplastic identification.
For laboratories already heavily using Shimadzu chromatography/UV instruments, choosing Shimadzu FTIR enables unification of data formats, compliance workflows, and training systems, which is a significant hidden benefit [8].
2.4 Strengths and Weaknesses
| Dimension | Strengths | Weaknesses |
|---|---|---|
| Cost-effectiveness | Often lower price than Thermo/Bruker for same configuration | Weak expansion in high-end research |
| Design | Compact, built-in dehumidifier suitable for hot and humid environments | Interferometer not RockSolid-class maintenance-free |
| Software | Advantage of LabSolutions unified platform | Smaller ecosystem for standalone FTIR users |
| Market | Top market share in Japan | Lower market share in European and American research |
| Service | High density of Shimadzu engineers domestically | Fewer high-end accessory options |
Table 4: Overview of Shimadzu FTIR strengths and weaknesses (comprehensive user feedback [6][8])
3. JASCO: High-Speed Scanning and Customization "Japanese Precision Engineering"
3.1 Brand Origin
Japan Spectroscopic Corporation (JASCO Corporation) was founded in 1958, starting with circular dichroism (CD) spectrometers and spectrophotometers. It is one of the representative manufacturers of precision optical instruments in Japan. Although its FTIR business is smaller in scale than Thermo/Bruker, it has a unique position in high-speed scanning and automated sampling [9].
3.2 Main Product Lines
| Model | Positioning | Typical Resolution | Signal-to-Noise Ratio | Highlight |
|---|---|---|---|---|
| FT/IR-4700 | Routine Analysis | Better than 0.25 cm⁻¹ | 50,000:1 | Auto-alignment interferometer |
| FT/IR-6700 | Research Grade | Better than 0.1 cm⁻¹ | 70,000:1 | High-speed scanning 50 scans/sec |
| FT/IR-8700 | High-End Research | Better than 0.07 cm⁻¹ | 85,000:1 | Optional vacuum optical path |
Table 5: Overview of JASCO FT/IR-4X series (data source: JASCO product manual [9])
Core Features [9]:
- High-speed scanning: FT/IR-6700 up to 50 scans/sec, a powerful tool for kinetic tracking and reaction monitoring;
- Optional 8-position autosampler: With an 8-position sample turntable, suitable for high-throughput QC scenarios (e.g., batch identification of pharmaceutical raw materials);
- Polarization accessory integration: JASCO has a relatively complete accessory ecosystem in polarization infrared (orientation analysis);
- Optional vacuum type: FT/IR-8700 optional vacuum optical path extends far-infrared capability.
3.3 Strengths and Weaknesses
| Dimension | Strengths | Weaknesses |
|---|---|---|
| High-speed scanning | 50 scans/sec, advantage in kinetic studies | Primarily single-point detection, weak in FPA |
| Automation | 8-position autosampler suitable for high-throughput QC | Small user base |
| Polarization accessories | Complete ecosystem for orientation analysis | Weak micro-IR ecosystem |
| Market | Traditional user base in Japan and Southeast Asia | Smaller global market share |
Table 6: Overview of JASCO FTIR strengths and weaknesses (comprehensive user feedback [9])
4. Agilent (formerly Varian): The "Hidden Champion" of Microsample Analysis
4.1 Brand Origin
Agilent's FTIR business originates from the 2010 acquisition of Varian, Inc. ($1.33 billion) [10]. Varian has been an important spectrometer manufacturer in the United States since the 1950s, renowned for its Cary series UV-Vis-NIR spectrophotometers. After integration into Agilent, the FTIR product line continues to use the Cary 630/660/670 naming, forming a "total laboratory solution" with Agilent's chromatography and mass spectrometry [10][11].
4.2 Main Product Lines
| Model | Positioning | Typical Resolution | Signal-to-Noise Ratio | Weight | Typical Applications |
|---|---|---|---|---|---|
| Cary 630 | Portable | Better than 1.0 cm⁻¹ | 25,000:1 | 5 kg | QC, Field |
| Cary 660 | Routine/Research | Better than 0.07 cm⁻¹ | 70,000:1 | 16 kg | QC, Scientific Research |
| Cary 670 | High-End Research | Better than 0.05 cm⁻¹ | 90,000:1 | 22 kg | Scientific Research, Step-Scan |
Table 7: Overview of Agilent Cary series FTIR (data source: Agilent product manual [11])
Core Features [11]:
Microsample analysis advantage: Cary 660/670 paired with Agilent's micro-drop cell (requires only 1 μL sample), well-regarded in pharmaceutical and biochemical microsample analysis;
Step-Scan: Cary 670 supports step-scan mode for time-resolved studies;
- Resolutions Pro software: Full functionality, but user ecosystem is smaller than Thermo/Bruker.
4.3 Strengths and Weaknesses
| Aspect | Strengths | Weaknesses |
|---|---|---|
| Microanalysis | 1 μL liquid cell, advantage for micro samples | No significant advantage for routine samples |
| Software | Resolutions Pro full functionality | Smaller user ecosystem, fewer training resources |
| High-end | Step-scan supports time-resolved | Weak FPA micro-IR ecosystem |
| Market | Integration with Agilent chromatography/mass spectrometry | Declining standalone FTIR market share |
Table 8: Overview of Agilent FTIR strengths and weaknesses (compiled from user feedback [11])
V. Domestic Instruments: Tianjin Gangdong, Beijing Rayleigh
5.1 Rise of Domestic Alternatives
Over the past decade, domestic FTIR instruments have rapidly emerged in the entry-level and mid-range markets, driven by [12][13]:
- Government procurement preference: Policies from the Ministry of Education and Ministry of Science promoting "domestic substitution" push universities and testing institutions to purchase domestic instruments;
- Cost-effectiveness: Same configuration priced at 1/3–1/2 of imported brands;
- Fast service response: Original engineers can arrive on-site within 48 hours, much faster than imported brands;
- Domestic key components: Light sources, detectors, KBr beamsplitters, etc., have been localized; only MCT detectors still rely on imports.
5.2 Tianjin Gangdong
Tianjin Gangdong Technology is one of the leading domestic FTIR manufacturers [12]:
- WQF-510 series: Routine analysis grade, positioned to compete with Nicolet iS20;
- WQF-530A: Portable teaching model;
- Highlight: Price about 1/3 of imported instruments with same configuration, high market share in domestic university teaching market;
- Software: Comes with Gangdong spectral analysis software, compatible with JCAMP-DX universal format.
5.3 Beijing Rayleigh
Beijing Rayleigh Analytical Instrument is another major domestic player [13]:
- WQF-600 series: Research-grade platform;
- WQF-510A: Routine QC;
- Highlight: Strong local integration of polarization accessories, variable temperature accessories;
- Has a user base in in-situ catalysis and mineral analysis.
5.4 Strengths and Weaknesses of Domestic Instruments
| Aspect | Strengths | Weaknesses |
|---|---|---|
| Price | 1/3–1/2 of imported price | High-end research capability still needs improvement |
| Service | 48-hour on-site service | MCT still relies on imports |
| Software | Domestic, Chinese-friendly | Weak software ecosystem and library resources |
| Market | Rising share in domestic teaching/QC | Low overseas recognition |
| High-end | Sub-mid-range already replaceable | Far-IR, vacuum, FPA still depend on imports |
Table 9: Overview of domestic FTIR strengths and weaknesses (compiled from [12][13])
🔗 Further reading: The domestic instrument software ecosystem is relatively weak; you can use open-source/online tools like ftir.fun to supplement spectral analysis and functional group query capabilities. For example, when analyzing unknown plastics, upload the ATR spectrum to ftir.fun, compare with ester C=O page and aliphatic C-H page to determine whether it is PET, PA, etc., making up for the deficiencies of domestic instrument libraries.
VI. Comprehensive Comparison of Six Major Camps
6.1 Comprehensive Comparison Table
| Aspect | Thermo | Bruker | PerkinElmer | Shimadzu | JASCO | Agilent | Domestic |
|---|---|---|---|---|---|---|---|
| Portable Entry | iS5 | ALPHA II | Spectrum Two | IRSpirit | — | Cary 630 | WQF-530A |
| Routine QC | iS20 | Tensor II / INVENIO | Spectrum 3 | IRAffinity | FT/IR-4700 | Cary 660 | WQF-510 |
| Research | iS50 | INVENIO R | Frontier | IRTracer | FT/IR-6700 | Cary 670 | WQF-600 |
| Flagship/Vacuum | iS50 Full | VERTEX 70v | — | — | FT/IR-8700 | — | — |
| Interferometer Highlight | Dynamic alignment | RockSolid | Ambient optical correction | 30° incidence | High-speed scan | Step-scan | Traditional Michelson |
| Software Ease of Use | ★★★★★ | ★★★ | ★★★★ | ★★★★ | ★★★ | ★★★ | ★★★★ |
| Micro-IR Ecology | Continuμm | HYPERION/FPA | Spotlight | — | — | — | Weak |
| Far-IR/Vacuum | Optional | ★★★★★ | ★★ | ★ | ★★ | ★ | — |
| Cost-effectiveness | ★★★ | ★★★ | ★★★ | ★★★★ | ★★★ | ★★★ | ★★★★★ |
| Domestic Service | ★★★★★ | ★★★★ | ★★★ | ★★★★★ | ★★ | ★★★ | ★★★★★ |
| Second-hand Market | Most active | Active | Average | Average | Less | Less | Weak |
Table 10: Comprehensive comparison of six major FTIR camps (★ are relative ratings, for purchasing reference only; compiled from [1][3][6][9][11][12])
6.2 Market Overview
According to the 2023 market report from the Chinese Journal of Scientific Instrument [12]:
- Global FTIR market size is approximately $1.2 billion/year, growing 5–7% annually;
- Thermo + Bruker together account for about 55% of the global mid-to-high-end market;
- PerkinElmer, Shimadzu, Agilent, JASCO together account for about 25%;
- Domestic and other manufacturers account for about 20% (mainly concentrated in China and Southeast Asia entry/mid-range markets).
VII. Additional Perspectives for Purchase Decisions
7.1 Do Not Overlook "Software Uniformity"
If your lab already has a large number of chromatography/mass spectrometry instruments from a certain brand, choosing the same brand FTIR can bring hidden benefits of unified software, unified training, and unified compliance processes. Typical cases [8][11]:
- Already have Shimadzu HPLC/GC → choose Shimadzu FTIR, share LabSolutions;
- Already have Agilent GC-MS → choose Agilent Cary FTIR, share OpenLab/CDS;
- Already have Thermo LC-MS → choose Thermo Nicolet FTIR, share Chromeleon data flow.
7.2 "Niche" Does Not Mean "Bad"
JASCO and Agilent are relatively "niche" in public perception, but have irreplaceable advantages in specific areas (high-speed scanning, microanalysis). When purchasing, do not just look at "market share," but return to your own application needs [1][9][11].
7.3 Realistic Boundaries of Domestic Substitution
Domestic instruments can be confidently substituted for imports in teaching, routine QC, and entry-level research scenarios; however, caution is still advised in the following scenarios [12][13]:
- Require FPA micro-IR imaging (microplastics, tissue);
- Require far-IR/vacuum optics (metal-organic, inorganic materials);
- Require "method credibility" for publishing high-level papers (some journal reviewers have doubts about domestic instrument data, though biased, it exists objectively).
Summary of This Section
| Core Points | Key Information |
|---|---|
| PerkinElmer | Spectrum Two/3/Frontier; excellent optics, UI friendly; Spotlight linear array microscope is distinctive |
| Shimadzu | IRSpirit/IRAffinity/IRTracer; high cost-effectiveness, built-in dehumidifier; LabSolutions unified platform |
| JASCO | FT/IR-4X series; high-speed scanning at 50 spectra/s; 8-position autosampler; polarization accessory ecosystem |
| Agilent | Cary 630/660/670; micro liquid cell 1 μL; step-scan time-resolved |
| Domestic instruments | Tianjin Gangdong WQF, Beijing Ruili WQF; price 1/3–1/2; fast service; high-end still needs improvement |
| Selection dimensions | Software uniformity, micro-IR ecosystem, far-IR capability, cost-effectiveness, domestic service, second-hand market |
| Market landscape | Thermo+Bruker 55%; PE/Shimadzu/Agilent/JASCO 25%; domestic 20% |
| Online assistance | ftir.fun can supplement domestic instrument software ecosystem and library resources |
Questions
A newly established local undergraduate university's chemistry department has a limited budget (no more than 150,000 RMB per unit) and needs to purchase 3 FTIRs for undergraduate teaching labs. Would you recommend entry-level imported models or domestic instruments? Argue from three perspectives: teaching effectiveness, maintenance cost, and student future employment adaptability.
A pharmaceutical company's QC lab has fully adopted Shimadzu HPLC and GC. Now they need to add an FTIR for API identification. Which is more reasonable: choosing Shimadzu IRAffinity or Thermo iS20? How much is the hidden benefit of software uniformity?
Compare the linear array detector of PerkinElmer Spotlight with the FPA array detector of Bruker HYPERION in microplastic analysis. If only analyzing 50 microplastics, is the difference significant? What about analyzing 5000?
In which practical applications can JASCO's "high-speed scan 50 scans/second" provide value? Give two specific scenarios and explain why conventional FTIR (10 scans/second) cannot meet the requirements.
There is an obvious "capability gap" between domestic FTIR being "suitable for teaching/routine QC as a substitute for imports" and "high-end research still relying on imports." In the next 5 years, which aspect is most likely to break through this gap? Hardware (MCT, vacuum optics) or software (chemometrics, library ecosystem)?
References
[1] Chalmers J M, Griffiths P R (eds.). Handbook of Vibrational Spectroscopy. Wiley, 2002. ISBN: 978-0-471-98847-2.
[2] PerkinElmer Inc. A History of Innovation in Infrared Spectroscopy. 2020.
https://www.perkinelmer.com/l…
[3] PerkinElmer Inc. Spectrum Two / Spectrum 3 / Frontier FTIR Product Specifications. 2024.
https://www.perkinelmer.com/p…
[4] Spragg R A et al. Performance and Applications of the PerkinElmer Spotlight IR Microscope. PerkinElmer Application Note, 2019.
[5] Shimadzu Corporation. Corporate History — 150 Years of Innovation. 2025.
https://www.shimadzu.com/abou…
[6] Shimadzu Corporation. IRSpirit / IRAffinity-1S / IRTracer-100 Product Brochures. 2024.
https://www.shimadzu.com/an/p…
[7] Nishikida K. Selection Guide for FTIR Accessories. Shimadzu Technical Report, 2021.
[8] Shimadzu Corporation. LabSolutions IR — Software Reference. 2023.
[9] JASCO Corporation. FT/IR-4X Series FTIR Spectrometers Catalog. 2024.
https://www.jasco.co.jp/en/pr…
[10] Agilent Technologies. Completion of Varian Acquisition — Press Release. 2010.
https://www.agilent.com/about…
[11] Agilent Technologies. Cary 630 / 660 / 670 FTIR Spectrometers Specifications. 2024.
https://www.agilent.com/en/pr…
[12] China Instrument and Control Society. China Analytical Instrument Industry Development Report (Infrared Spectrometer Section). 2023.
[13] Beijing Ruili Analytical Instrument Company. WQF Series FTIR Product Manual. 2024.
[14] ftir.fun Infrared Spectrum Online Analysis Tool. https://ftir.fun
[15] ftir.fun Ester Carbonyl Functional Group Page. https://ftir.fun/ir/group/est…
[16] ftir.fun Amine N-H Functional Group Page. https://ftir.fun/ir/group/ami…
[17] ftir.fun Aliphatic C-H Functional Group Page. https://ftir.fun/ir/group/alk…
Next Episode Preview: Ep 48 — Buying Guide: How to Choose an FTIR Instrument Based on Needs
After completing the cross-comparison of six major camps, the next episode will provide a systematic purchasing methodology: starting from the "needs analysis matrix" (teaching/QC/research/field four quadrants), interpreting the true meaning of core parameters such as resolution, signal-to-noise ratio, throughput; accessory configuration strategies (ATR essential, DRIFTS, gas cell, micro-IR trade-offs); budget allocation suggestions (host vs. accessories vs. software vs. maintenance); precautions in the second-hand instrument market; and procurement negotiation tips and acceptance checklist.
This article is licensed under CC BY-NC-SA 4.0. Images are from public domain or attributed online sources; copyright belongs to the original authors.