Koehler Instrument Company Inc.

All-glass assemblies are ideal for biodiesel testing, aggressive solvents, and applications where you need to minimize the materials that contact sample or filtrate. Filter holder mounts on filtration flask using a ground glass joint; order standard 47-mm filter paper separately below. Outlet of support base drip tube is positioned below the side arm connection to prevent sample aspiration into vacuum line. What’s included: funnel, support base, receiving flask, and clamp.

For determining the material loss by gas-entrained solid particle impingement erosion with jetnozzle type erosion equipment. It can be used in the laboratory to measure the solid particle erosion of different materials and has been used as a screening test for ranking solid particle erosion rates of materials in simulated service environments

The Aquamax TAN titrator is easy to operate: simply calibrate, run a blank, select the correct preprogrammed TAN analysis, and the titrator performs the analysis. Intuitive function guide display walks you through operation. Results are displayed on screen in units of KOH/g and are also stored via internal data logger. Flexible data management options allow for export of readings to a PC or printer. TiCOM software (order separately below) allows viewing and printing of sample input, blank, and titration measurement data. Optional thermal printer accessory allows for the printing of results data. Order separately below.

The Koehler Benchtop EDXRF Elemental Analyzer can be used to determine the amount of sulfur in petroleum and petroleum products that are single-phase. This product may be used to determine the amount of lead in gasoline as well.

Baths feature PID microprocessor controller to deliver precise temperature control, with ASTM specified tolerances throughout the operating temperature range. Dual digital displays show set point time and actual temperature. Timers display in 0.01-second resolution and have ±0.01% accuracy. Models with RS-232 port also allow you to enter the viscosity constant of each viscometer on the controller panel. Controller automatically displays test results in efflux time and viscosity units when timers stop. Controller automatically shuts off power when there is an overtemperature condition or if the primary probe is disconnected.

The integrated low-level sensor interrupts operations if the bath liquid does not fill to the proper level, and shuts off power if the liquid falls below the level. Bath chamber is a clear Pyrex® tank enclosed in a polyester-epoxy finished steel housing. Top plate holds the viscometers and is made of stainless steel for easy cleaning. Front viewing window reduces distortion. Glare-free fluorescent lights in the bath and a background baffle enhance the view of the viscometers. Baths rest on adjustable leveling feet.

Accelerated Laboratory and Field Procedure for the determination of corrosion of iron, in the presence of water, on samples such as gasoline and gasoline blended with 10% ethanol, E10 (Specification D4814); gasolineblend components (except butane); diesel fuel and biodiesel B5, except Grade No. 4-D (Specification D975); biodiesel B6 to B20 (Specification D7467); diesel-blend component such as light cycle-oil; No.1 fuel oil, No.2 fuel oil (Specification D396); aviation turbine fuel (Specification D1655).

The Copper Strip Tarnish Test assesses the relative degree of corrosivity of petroleum products, including aviation fuels, automotive gasoline, natural gasoline, solvents, kerosene, diesel fuel, distillate fuel oil, lubricating oil and other products. A polished copper strip is immersed in 30mL of sample at elevated temperature. After the test period, the strip is examined for evidence of corrosion and a classification number from 1-4 is assigned based on a comparison with the ASTM Copper Strip Corrosion Standards. For aviation fuels and natural gasoline the sample tube is placed inside a stainless steel pressure vessel during testing.

Consists of two heat-transfer corrosion cells with temperature and pressure controls for evaluating engine coolant samples in accordance with ASTM D4340. Maintains aluminum alloy specimens at constant temperature in the presence of 500 mL samples. Each corrosion cell includes a borosilicate glass test cell, heat transfer bar, aluminum test specimen with thermocouple port, Type J thermocouple, 950W band heater, pressure gauge, pressure relief valve, stainless steel end plates with support rods, fill plug and o-rings, and acrylic safety shields. Digital temperature controllers maintain specimens at temperatures of up to 210 ± 1°C throughout the test period. Test cells are mounted on a finished steel base. Controls are housed in a separate finished steel cabinet.

Provides a laboratory screening procedure for evaluating the corrosion preventing capabilities of engine coolants under heat transfer conditions that may be encountered in aluminum cylinder head engines. Corrosion preventing effectiveness is determined by the change in weight of an aluminum alloy test specimen after an extended period at elevated temperature in the presence of a coolant sample.

Fully insulated, thermostatically controlled water bath with constant water level device. Use together with K25370 Bath Conversion Kit to immerse six 350mL test tubes for silver strip corrosion tests. Stainless steel inner wall and powder coated steel outer wall construction.

Two Models are Available – The Automatic Distillation Analyzer 5000 Series may be ordered for operation with an external PC (purchased separately) or may be ordered with a built-in PC, internal touch screen monitor, virtual keyboard and mouse. An easy-to-use Windows®-based PC communication software expands user capabilities for data analysis and unit control. Distillation methods and parameters can be easily created or modified. Software calculates repeatability and reproducibility as per ASTM D86 as well as standard and deviation against reference materials. Test results are displayed in real-time and can include distillation curve and temperature with or without barometric compensation and/or evaporation correction, distillation rate, heating power curve, master curve comparison, and zoom function for high resolution of heating and temperature curves. The heater compartment is rapidly cooled at the completion of a distillation run to reduce operator downtime. The analyzers are of rugged construction for instrument longevity with a modular design for easy routine maintenance.

Koehler Automated Flash Point Analyzers represent a perfect union of next-generation technology with traditional robust quality. The system software runs on an integrated processor PC running the latest Windows operating system. The 8.4” touch screen interface fully displays all operator parameters and results on a single screen. A three (3) position mechanical lift system for the cover and motor assembly is fully automated and software selectable: Open – Clean – Test for one touch positioning of the test cup. Comes standard with two flash detector systems including a thermocouple and ionization ring detection. Over 65,000 results of data can be stored on the local hard drive. Integrated Dual Fan System directly cools the test cup and the environment around test cup. Unlimited number of user programs including a quick test that safely tests from ambient, puts the flash point result into the EFP of the official run, and prompts user to refresh the sample, virtually assuring no fires ever occur. In addition, the instrument comes standard with an inert gas fire suppression system

The Automated Tag Closed Cup flash point tester ensures the accuracy and precision required according to the ASTM D56 and related test methods. The test sample is heated at a prescribed rate of temperature increase throughout the standard temperature test range to 100°C. The flash point tests are simply conducted by mounting the flash cup filled with sample into the test position and selecting a pre-programmed test method or the search mode to determine an approximate flash point. The automation routines provide accurate test results. Ignition by gas flame or electrical ignitor is included, along with safety cut-off devices. The measurement range can be extended to –30°C by any appropriate external chiller. Supervision software is included.

Rapid Tester® provides rapid determinations of flash point or sustained burning qualities by using a small sample. A flash/no flash test result is achieved in one minute for flash points below 212°F (100°C) with a 2mL sample. Ideally suited for quality assurance and environmental compliance testing as well as actual flash point for paints, fragrances, hydrocarbons and other liquids. Open cup models are used for determining sustained burning qualities characteristics of mixtures of flammable and nonflammable liquids or liquids with widely different flash points when assessing flammability characteristics. Features convenient semi-automatic operation for flash/no flash tests. Set the test temperature on the digital display and inject a 2mL or 4mL sample into the sample cup. The tester quickly stabilizes itself at the desired value, permitting the test flame to be applied and the result to be observed by the operator. Unit also performs conventional determinations of actual flash temperature by the small scale closed tester method. The Closed Cup Model is for routine flash point tests in the range from –30 to +300°C (–22 to +572°F).

Features

• Conforms to ASTM D3278, D3828; DOT CFR 49-173.115; IATA;
• ISO 9038, BS3900 Part A11, A13, A14 and related specifications
• One minute test with a 2mL sample
• Simple to operate

A complete system for conducting FIA analyses of a single or up to six samples simultaneously. Each system is complete with an upper multi-position air pressure manifold with independently-operated gauges, pressure regulators and ball O-ring joints allowing for individual pressure control at each column. Each pressure regulator may be set at any point from 0-15 psi and will maintain the set pressure regardless of changes in back pressure. An integral pressure gauge on each station continuously registers the active pressure on each column. The ball O-ring connection system connects the pressure regulators to the upper columns, and the proper seal is achieved by applying moderate clamping pressure of stainless steel clamps without utilizing any grease. Convenient O-ring compression type fittings simplify the connection of the analyzer tubes (3mm OD x 1200mm) to the upper columns. The internal geometry of the fittings is optimized for transition between tubing diameters, and a simple twist of the connection fitting releases the analyzer tube. O-ring compression type fittings are also used to cap the end of each analyzer tube with the column support tips. The tips contain an internal porous polyethylene disc in order to support the silica gel packing in each analyzer tube. An integrated electric vibration system is mounted to the upper chassis so that the columns can be vibrated to facilitate the dry gel packing procedure, and features an on/off and amplitude selector switch. The complete unit also includes a 1mL syringe with 4” needle, two gel bottles for pouring silica gel, extra O-rings, stainless steel ball-and-socket joint clamps, and two mounting brackets with screws for stabilizing chassis.

This simple-to-use biodiesel GC system is ideal for the quantitative determination of free and total glycerin in B100 methyl esters by gas chromatography. The calibrated results are displayed directly, eliminating off-line calculations.

Both the carrier gas and the Flame Ionization Detector (FID) combustion gas are controlled by programmable Electronic Pressure Controllers (EPCs). EPCs not only provide rock-solid retention time reproducibility, but allow the carrier gas to be pressure ramped (just as the column oven is temperature ramped) from the built-in PeakSimple data system.

The on-column injector is ideal for 1⁄8″ packed and 0.53-mm wide-bore capillary columns, and is suitable for analyses ranging from methane to heavy, high-boiling hydrocarbons (C44+). The column oven accepts column cage diameters up to four inches, is programmable to 752°F (400°C), and recycles quickly with its high-speed cool-down fans.

Fully automatic bench top centrifuge designed expressly for petroleum testing applications. Features a 4-1/2” LCD touch screen control panel. This integrated touch screen can be used to turn the heat on and off, set the duration of the test, set the RCF/RPM values and choose the type of rotor assembly and corresponding glassware to be used during the test. The Servoed motor speed mechanism allows the user to simply set the desired speed and the instrument will attain that speed. This mechanism calculates RPM based on the given RCF and type of Rotor selected. The large, clear, top opening lid provides for easy access to the rotor and tube holders and for cleaning of the unit. The lid has a 18-1/2” diameter viewing window allowing the operator to view inside the chamber for checking the status of the rotor and checking for possible spillage of the centrifuge tubes. Molded PTFE cushions provide for maximum protection and easy positioning of the tubes. Safety Features The Centrifuge comes equipped with a Safety Lockout Mechanism. Upon emergency shutdown the door is locked and cannot be unlocked until the unit comes to a complete stop, the unit is turned back on, and the stop/unlock key is pressed on the touch screen display. Furthermore, the centrifuge cannot start while the door of the chamber is open and the latch is not engaged. The “Nitrogen Purge” feature allows for a slow release of Nitrogen into the bowl of the centrifuge. This feature requires an external Nitrogen Gas source and can easily connect to an Inlet port located at the back of the unit.

• Choice of long, short, pear, or finger rotor assembly to accommodate corresponding centrifuge tubes
• Accommodates four (4) four centrifuge tubes of 6 or 8” conical ASTM types, long, short, pear or finger tubes
• Automatic control of acceleration ramp, centrifugation speed, andtiming functions.
• 4-1/2” LCD Touch Screen Control Panel
• Substantial Insulation for Reduced Heat Loss
• Precise balancing, Quiet Operation
• Large, clear, top opening lid
• Class 1, Division 2 explosion resistant rating

The Low Temperature Flow Tester, K95300, has been developed for testing lubricating greases in low temperature environments. The test is performed in accordance with DIN 51805 and can also be customized.



Low Temperature Flow is measured according to the method of Kesternich (DIN 51805). The K95300 test system is an instrument for the determination of the flow pressure of lubricating grease at temperatures down to -50°C. Due to the special design of the cooling system, the K95300 can cool down in high speed and reach temperatures of -50°C without an expensive external cooling device.

The core components are in accordance with medical standards to ensure highest precision and accuracy even in very low-pressure ranges. An easy to use touch screen interface helps to operate and use the machine in a quick and professional way.

The Tackiness Tester, K95200, has been designed to provide an objective and qualitative test for tackiness. The tester quantifies the cohesive and adhesive tactile properties of greases by measuring the sample in Newton’s and replaces the old finger sticky test method with a numerical and graphical result.



Greases are widely used in machinery and automotive components to protect components from frictional and wear losses. As a result, interaction properties like tackiness become crucial factors and often dictate their performance, especially when it comes to bearing lubrication. This property is related to microstructural aspects of grease such as thickener network, wetting agents and additives.

The Koehler Air Release Value Apparatus consists of a test vessel and air flow control equipment for delivering heated air at the specified flow rate to a lubricating oil sample maintained at constant temperature. Integrated Touch Screen Control Panel guides user from start to finish of test operation and provides density calculation and timing operation for measuring the air release value of the test sample. Drying oven available as additional accessory for warming test oil at temperatures of up to 100°C; Integrated Circulating Bath and air bath for sinker; compressed air heater, overtemperature and overpressure protection circuitry. Automatically measures the time for air release.



The ability of a turbine, hydraulic, or lubricating oil to separate entrained air is a key performance characteristic in applications where agitation causes a dispersion of air bubbles in the oil. To determine air release properties, the sample is heated to a specified test temperature and blown with compressed air. After the air flow is stopped, the time required for the air entrained in the oil to reduce in volume to 0.2% is the air bubble separation time.

Test the range of boiling points for petroleum and biofuel products with this vacuum distillation system. The sample is distilled at a reduced pressure and the initial and final boiling points are measured. A distillation curve can be generated relating volume percent distilled and the atmospheric equivalent boiling point temperature.

Main body of the system is constructed of an aluminum frame and cold rolled steel walls with a clear protective door for added safety. Digital controller displays both overhead and flask temperature, along with vacuum reading. Built-in fan reduces cooling time of the distilling flask for shorter turnaround times between tests.

Optional vacuum pump kit (59876-82) includes a vacuum pump, hose nozzle, hinged clamp, outlet filter, filter clamp, one liter of vacuum oil, connection tubing, and two hose clamps.

The carbon residue test serves as an approximation of the tendency of the test material to form carbonaceous deposits. The test material is subjected to evaporation and pyrolysis under certain conditions and the residue is weighed and the mass percentage calculated. Test up to twelve 2-mL samples simultaneously using the included small vial holder; optional vial holder 59876-51 holds six 16-mL vials and holder 59876-52 has seven places for 2-mL and 16-mL vials. Order vials separately; quartz vials are reusable for the ash content test. Vial 59876-59 is for the MCR test.

Determines the tendency of finished oils to form coke when in contact with surfaces at elevated temperatures for short periods. A sample of oil is mechanically splashed against an aluminum test panel at elevated temperature. After a specified test period, the amount of coke deposited on the panel is determined by weight.

Digitally controlled panel coking apparatus for finished lubricating oils, consisting of mechanical splasher, splash chamber and sample oil reservoir Test panel temperature and oil sump temperature are individually controlled by separate heaters with digital-indicating controllers. Mechanical splasher has a variable speed 0-1800rpm drive motor with digital indicating control. A high accuracy variable area flowmeter permits introduction of a corrosive acidic atmosphere to increase the severity of the test. Equipped with a digital countdown timer. Hinged safety cover has a port for fume removal and a safety interlock switch that interrupts power to the drive motor when the cover is lifted.

• Conforms to FTM 791-3462 specifications
• Suitable as a screening test prior to performing engine tests