PAC is a worldwide leader in laboratory analysis equipment. With a product portfolio of over 200 testing instruments, PAC serves its customers with cutting-edge technology and significant R&D resources to support its core technologies: chromatography, elemental analysis, physical properties, fuels composition, and laboratory automation.



Spectrometer Technologies supply PAC LP Physical Testing analytical laboratory instruments in South-, and Southern Africa.
For decades, PAC has brought constant innovation to multiple industries with its family of long-established and well-known product lines. These lines, including ISL, Walter Herzog, PetroSpec, AC Analytical Controls, Alcor, Antek, and Cambridge Viscosity have been the backbone of best-in-class refinery, petrochemical, biofuels,  food and beverage, environmental and pharmaceutical laboratories around the world for years, providing the platform for breakthrough product and process development.


ISL by PAC is a global provider of scientific apparatus and instruments for testing petroleum and petrochemical products in the lab and online. More than 20 automatic analyzers bearing the ISL brand are recognized for increasing test precision, boosting laboratory efficiency and reducing costs. ISL’s story began nearly 34 years ago when a group of engineers and scientists in the North of France, in the heart of the country’s petrochemical industry, began developing automatic instruments for use in the petroleum industry. Their facility, and the location, turned out to be an excellent proving ground for research and development of their new instrumentation.

By the mid 1970s, several quality instruments had been developed and were being marketed in Europe. It was during this period in 1975, that the ATPEM Trademark was born. The most famous of these new instruments was the Automatic Atmospheric Distillation ASTM D86 and the CPP 97, Automatic Cloud and Pour Point Analyzer, introduced in the early ’80s.

ISL PMD 110 – Atmospheric Distillation

Developed in partnership with leading university researchers, the ISL PMD 110 is a state-of-the art solution for fast and reliable response distillation analysis. It is in accordance to ASTM D7345 and in perfect correlation with ASTM D86 (groups 0-4), D1160, ISO 3405 and IP 123. Based on an innovative micro-distillation method, the PMD 110 determines […]


The next generation Freezing Point Analyzer offers proven technology used by labs worldwide. The powerful internal cooling system can measure up to -100C (-148F) without the need of an external cooling bath. The unique patented detection cell provides ultra-high accuracy with unmatched precision, while maintaining its compact footprint.The newly designed OptiFZP includes a color touchscreen […]


The next generation OptiFPP combines a patented built-in cooling system and highly precise detection mechanism into an ultra-compact, easy to use instrument.The ISL OptiFPP analyzer provides automated CFPP test in strict accordance to EN116 and EN16329 conditions. The ISL OptiFPP precisely controls jacket cooling and electronically controlled vacuum adjusts as the test specimen is drawn […]

MPP 5Gs – ISL – Automatic Cloud & Pour Point Analyser (mini)

Designed to provide highly accurate cloud and pour point temperatures of petroleum products during cooling, ISLs automated Mini Cloud Pour Point Analyzer is compact, portable and delivers fast results (30C in less than 30 minutes, and quick pour point correlation with no flow @ 0.1C determination). Easy single button operation involves placing a tube filled […]

VIDA Density Meter

VIDA Density Meter Test MethodsASTM D4052, ASTM D5002, IP 365, DIN 51757, ISO 15212, ASTM D5931, JIS K2249   Dedicated to the refinery and petrochemical industries, the VIDA TM analyzers integrate innovative features to ensure reliable and accurate analysis of crude oil & petroleum products from volatile to the highly viscous ones over temperature range of 0 to 100C. […]

RB36 – ISL – Ring and Ball

RB36 Ring and Ball Test Methods ASTM D36, ASTM E28, EN 1427, IP 58, ISO 4625   The RB36 5G, designed for measuring product temperatures from 0C to 220C, simplifies testing and increases productivity, repeatability and reproducibility.The instrument enables simultaneous testing of two samples with independent monitoring and results display of each. Simply load the […]


Using a “Houillon” capillary tube, ISL’s VH Series Viscometers automatically determine kinematic viscosity of lubricating oils, used oils, fuels, polymers, and similar materials over a wide viscosity range. Initially developed for lubricant blending facilities, research laboratories, and used oil monitoring where small sample size and quick results were required, the ISL VH viscometer offers exceptional […]

NCK2 5G – Automated NOACK Apparatus

ISLs safe, easy to use NCK2 5G Noack evaporation loss analyzer enables the most precise testing to meet increasing QS/QA requirements in full compliance with CEC, ASTM & IP methods. Designed for routine day-to-day work in labs with high sample workloads, the NCK2 5G test initiates with a few simple keystrokes. The test can be […]


Combining a revolutionary patented built-in cooling system and highly precise detection mechanism, ISL’s OptiCPP performs pour and/cloud point testing of any petroleum products, down to -95C (-139F), in accordance with all international standards. Its unique cooling technology eliminates external liquid connections, heat and noise but also the maintenance associated with external cooling. OptiCPP is 100% […]


Herzog engineers continue to develop the latest technology for testing cold behavior, distillation, flash point, vapor pressure, viscosity and other physical properties.

Herzog by PAC, originally established in 1931 is a long-established, comprehensive line of laboratory instruments for testing atmospheric and vacuum distillation, flash point, vapor pressure, bitumen properties, cold flow properties, viscosity and other physical properties of materials. Distillation and flash point analysis is provided by systems including the OptiDist and the HDV 632; viscosity and Bitumen testing by systems such as the HVM 472 and the HRB 754 Ring & Ball; and fuel classification by systems such as the CID 510 Derived Cetane Number.

As a highly experienced provider of physical testing instruments, we are an active member in standards organizations and lead standard development to guarantee that the methods meet customer requirements of precision and ease of use.

Optidist – Atmospheric Pressure Distillation

  Herzog’s OptiDist is a truly revolutionary automated distillation analyzer, offering the highest level of precision and ease of use ever seen in an instrument of this type. Its a state-of-the-art optimal solution for performing atmospheric distillation, featuring easy to use, one button operation, and unparalleled versatility. Its minimal footprint saves valuable lab space, installation […]

Herzog HDV 632 – Vacuum Distillation

The HDV 632 is a fully automated Vacuum Distillation Analyzer, which offers highest flexibility for the user. It can measure samples up to 650C AET. Choose ASTM D1160 or define and save your own custom programs. Naturally, you can add, delete, and revise custom tests as your products and test needs evolve. The HDV 632 […]

Optiflash – Pensky Martens

The OptiFlash Pensky Martens determines the flash point of petroleum products, biodiesels, solvents, fluxed bitumen, food, and beverages up to 400C. It complies to leading global standards, such as ASTM D93, ISO 2719, EN ISO 2719, IP 34, JIS K2265, and GB/T 261. The OptiFlash provides several benefits to our customers, including: Significantly Improved Ease […]


Alcor® by PAC is a global supplier of advanced petrochemical, fuel and lubricant research and testing solutions for aviation. Alcor instrumentation measures and verifies:

  • Jet fuel thermal oxidation
  • The tendency of materials to thermally degrade and form coke under high temperature conditions
  • Thermal degradation of turbine fuels under a variety of conditions.
  • Heater tube deposit ratings

Alcors high-quality JFTOT® IV, and MCRT systems exceed global standard specifications and are recognized worldwide as the leading technology for precision fuel analysis. Alcor products include:

  • Jet fuel thermal oxidation testers
  • JFTOT Heater tubes and Intelligent Heater Tubes
  • Microcarbon residue testers
  • Visual tube raters

Since its inception in 1959, the Alcor brand has been synonymous with quality and innovation. When the fuels industry needed a new instrument to measure fuel thermal oxidation, Alcor introduced the jet fuel thermal oxidation tester, JFTOT, now recognized as the industry standard in jet fuel testing. The Alcor JFTOT IV is the latest generation of jet fuel analysis instruments. It enhances safety, simplifies operation, and increases lab productivity.


JFTOT IV Jet Fuel Thermal Oxidation Tester Test Methods ASTM D3241, IP 323, ISO 6249   Alcor’s JFTOT IV is the globally recognized standard for jet fuel thermal oxidation testing with a worldwide installed base over 1000 instruments of various generations of JFTOT instruments. In addition to its accurate and reliable jet fuel analysis, it […]

MCRT- 160 Micro Carbon Residue Tester

Alcors MCRT-160 provides safe, simple measurement of a petroleum products tendency to thermally degrade and form coke under high temperature pyrolyzing conditions. Its powerful digital control over all ASTM D4530 test steps delivers results equivalent to Conradson Carbon (ASTM D189) with significantly less inconvenience or fuss. A typical D189 carbon residue analysis can easily take […]

OptiReader – Ellipsometer

Revolutionary ellipsometric jet fuel thermal oxidation heater tube scanner. Our new OptiReader provides pass/fail results with a full 2D and 3D thickness map defining maximum deposit thickness and volume. Results are not only fast, but also highly precise and accurate. The user interface is so simple it doesn’t require any training which saves time and […]


PetroSpec by PAC is the leading provider of dependable, portable, high-quality spectroscopic analyzers for measuring the chemical and physical properties of fuels. PetroSpec instruments are dedicated to field compliance testing for gasoline and diesel, helping end users meet such ASTM standards, including:

  • ASTM D6756
  • ASTM D5845
  • ASTM D6277
  • ASTM D4806


Phase Technology designs, manufactures, sells and services test instruments to measure cold flow properties. The company’s customers include oil refineries, commercial laboratories, fuel distributors, terminals, blenders, aviation companies, and military.

Phase Technology analyzers meet and comply with current ASTM International methods for measurement of pour point (ASTM D5949), cloud point (ASTM D5773 and D7397) and freeze point (ASTM D5972). The company meets and complies with numerous other major international standards and specifications, including those from the Energy Institute (EI).

Supported by 17 years of extensive inter-laboratory “round robin” research, Phase Technology consistently ranks highest for repeatability, reproducibility, sensitivity and equivalency to referee manual test methods. Phase Technology has been recognized with an ASTM Award of Excellence for developing world standards for petroleum cold flow behavior.


Phase Technology’s 70Xi cold flow properties analyzer significantly increases lab productivity and improves profitability by providing quick, precise results. The 70Xi analyzer helps minimize giveaway and ensure that released product is on spec. Phase Technology users can be confident that their test results accurately meet and comply with ASTM International standards for pour, cloud and […]


Phase Technology does it again – another “first” for the petroleum industry. Phase Technology’s new JFA-70Xi jet fuel analyzer is the world’s first and only instrument that performs three crucial tests in one unit—freeze point, viscosity and density. And, it does it all in less than 15 minutes! The JFA-70Xi features a new, side loaded […]

Wax Appearance Tester

WAT-70XI WAX APPEARANCE TESTER (WAT) LAB ANALYZER With a long, notable history as the world leader in developing test methods for cold flow properties detection, Phase Technology has extended its capability to include a critical measurement for crude oil: Wax Appearance Tester (WAT). Also known as cloud point, wax appearance tester testing is the temperature […]

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