Koehler Instruments for Fuels Testing
Discover petroleum testing instruments from Koehler.
Products Overview
Koehler Instruments provide a wide range of petroleum and fuels testing solutions designed to support quality control, compliance testing, and research across refinery, petrochemical, aviation fuel, lubricant, and fuels laboratories. The instruments featured on this page cover a variety of ASTM and IP test methods, including corrosion testing, fuel lubricity evaluation, hydrocarbon composition analysis, and carbon residue determination. Together, these systems help laboratories improve testing accuracy, repeatability, and operational efficiency while ensuring reliable characterisation of petroleum products and fuel performance.
The K643 Series Copper Strip Corrosion - Pressure Vessel Baths
The K643 Series Copper Strip Corrosion – Pressure Vessel Baths are used for the Corrosiveness to Copper from Petroleum Products by Copper Strip Test. The baths comply with ASTM D130, D4048 and IP 154.
The Copper Strip Tarnish Test assesses the relative degree of corrosivity of petroleum products which include aviation fuels, automotive gasoline, natural gasoline, kerosene, diesel fuel, distillate fuel oil and other products.
The test is simple to perform – a polished copper strip is immersed in 30mL of sample at elevated temperature inside a stainless steel pressure vessel for aviation fuels and natural gasoline, and inside a test tube for other samples. After the test period, the strip is examined for evidence of corrosion.
There are options for 4 and 8 test pressure bombs and 20 test tubes.
K643 Series - Copper Strip Corrosion Precision Bath
The K93495 High Frequency Reciprocating Rig (HFRR)
The K93495 High Frequency Reciprocating Rig (HFRR) from Koehler is used for evaluation of the lubricity of diesel fuels.
• Conforms to ASTM D6079 and related specifications
• With a variable frequency from 10 Hz to 200 Hz which is controlled via software
• The wear scar measurement is performed through a digital microscope and software
• With real time data acquisition of frictional force, coefficient of friction and temperature
• Has user friendly software for operating the test rig with different operating sequences
• Ability to programme a test sequence for automated testing
• Easy on-site calibration can be performed
• Proven repeatability and reproducibility
• Rigidly built dedicated table-top rig
Fluorescent Indicator Absorption Apparatus
The Fluorescent Indicator Absorption Apparatus determines saturates, olefins and aromatics in petroleum fractions that distill below 315°C.
A complete system for conducting FIA analyses of a single or up to six samples simultaneously. Each system is complete and has an upper multi-position air pressure manifold with independently-operated gauges, pressure regulators and ball O-ring joints which allow for individual pressure control at each column.
• Conforms to ASTM D1319 specifications
• Quick connections for columns provide faster set-up and analysis
• Integrated vibration system for dry silica gel packing
• Handheld UV Lamp
• Two, four, or six column models available
• Available in Standard Wall and Precision Bore
K415XX - Fluorescent Indicator Absorption Apparatus (FIA)
K41091 Micro Carbon Residue
K41091 Micro Carbon Residue for Determination of Carbon Residue (Micro Method). This instrument complies with ASTM D4530 and is used to determine the amount of carbon residue formed after evaporation and pyrolysis of petroleum materials under certain conditions which is intended to provide some indication of the relative coke forming tendency of such materials.
• Maximum Test Temperature: 800°C
• 2 Preset methods: Micro-Carbon and Ash Tests
• Provision for creating 18 additional methods with 4 heating segments each
• Data Storage: 200 Results
• Quick access to calibration parameters Auto Diagnostic
• Automatically controlled atmosphere
K244 Programmable Ashing Furnace
The ashing furnace is used for the determination of ash in distillate and residual fuels, gas turbine fuels, crude oils, lubricating oils, waxes, and other petroleum products.
• Six Complete Air Exchanges per Minute
• Maximum Temperature of 1200°C
• Touch Screen Control Panel
• Double walled housing for low external temperatures and stability
Conforms to the Specifications of: ASTM D482, D874, D1026, D3174, D4422, D5184; ISO 6245, 3987, 10478
Temperature Range: Ambient to 1200°C with accuracy ± 1°C
Temperature Uniformity: ± 3°C and resolution ± 0.1°C
Oven Volume: 5 L, 15L or 40 L oven volumes available.
Power: 0.17 cu. ft. (5L) model: 2700 W
0.52 cu. ft. (15L) model: 5500 W
1.41 cu. ft. (40L) model: 11000 W
A range of ASTM-compliant petroleum and fuels testing instruments for
reliable laboratory analysis and quality control.
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