Koehler

Photo of Constant Temperature Ductility Machine. Koehler
Similar to the standard Ductility Machine (A1383), but equipped with a solid state, thermostatically controlled bath and circulator to control temperature within ± 0.9°F (±0.5°C) in the range of 35-90°F (1.7-32.2°C). Circulated water is directed through stainless steel tubes beneath a false bottom in the trough to provide efficient heat transfer. Measures the distance of elongation of a bitumen sample when a briquet specimen is pulled apart at a specified speed and temperature. Supplied with three standard brass briquet molds and brass base plate.
Photo of Microprocessor-Based Digital Penetrometer. Koehler
A new microprocessor based penetrometer loaded with advanced features to provide ease of operation and highly reproducible consistency measurements of petroleum products. Microprocessor control provides a full range of measurement and reporting options, and operation is simplified by four user programmable presets that facilitate lowering the penetrator tip to the sample surface. The penetrometer defaults to the standard ASTM interval of 5.0 seconds, or the operator may conveniently program a different interval in the range between 0.1 and 9999.9 seconds (in 0.1 second increments).
Photo of Koehler Manual Penetrometers

Designed for ASTM penetration tests on petroleum products and for consistency tests on a wide range of food products, cosmetics, pastes and other solid to semisolid products. Precision machined and assembled to exacting specifications, and ruggedly constructed to insure long service life in both laboratory and field applications. Features a full penetration range of 0-62.0mm with 1/10mm subdivisions (0-620 penetration scale). Accommodates cones and needles to perform all of the ASTM tests on lubricating greases, asphalts, petroleum waxes and petrolatums.

Photo of Softening Point Apparatus. Koehler
The sample is cast in shouldered rings and heated at a controlled rate under the weight of a steel ball. The softening point is the temperature at which the bitumen disks soften and sag downward a specified distance. Consists of 800mL beaker, 2 standard balls, shouldered rings, ball centering guides, ring holder, bottom plate and beaker cover with support rods. Order thermometer and heater separately. Conforms to the specifications of: ASTM D36, E28; AASHTO T53; IP 58, 198; NF T 66-008. Shipping Weight: 4 lbs (1.8kg).
Photo of Penetrometer Cones & Needles. Koehler
Precision machined cones and needles for ASTM and related methods. Use together with A1570 and A1573 series penetrometers to determine the consistency of petroleum products.
Constant temperature water bath for conditioning samples prior to a penetration test. Full visibility bath has a large shelf to accommodate a wide range of sample containers, including all containers used in ASTM tests. Sample containers can be left in the bath during the penetration test if required. The base of the Koehler manual penetrometer can be placed directly on the shelf of the bath, or the head assembly of the digital automatic model can be reversed to overhang the bath. Temperature Range: Ambient to 70°C.
Photo of Breaking Point Apparatus
Determines the breaking point of solid and semi-solid bitumens. A thin steel plaque is coated with the sample and flexed in a bending apparatus at descending temperatures until cracks appear in the sample coating. Consists of two concentric borosilicate glass tubes with movable steel plate holders. A cone-and-peg mechanism moves the inner tube up and down relative to the outer tube, which varies the distance between the plate holders, causing the stainless steel test plate to be flexed. The inner tube accommodates a test thermometer. Supplied with 12 spring stainless steel plaques.
Photo of Koehler General Purpose Utility Flask Heaters

Variable control electric flask heater designed for efficient, reproducible heating of flat bottom and round bottom beakers and flasks. Electronic unit control with reference dial permits fine temperature adjustment and accurate repeatable settings. Includes porcelain refractory heater with nichrome element (1250W) and refractory support plate that reverses to accept different size beakers and flasks. Polished stainless steel housing has cooling vents and two dovetail clamps to accommodate accessory support rod. Line switch and 6ft. (1.8m) three-conductor line cord and plug are included.

Photo of Koehler Thin Film Aniline Point Apparatus

For aniline point and mixed aniline point determinations according to Method B. Stirs aniline-sample mixture in a borosilicate glass thin film tube suspended in a heating bath. Thin film of mixture flows over a light well illuminated by a variable 6V lamp. Adjust heating rate per specifications using accessory Powertrol Heater. When lamp filament brightens inside well, allow mixture to cool until the two phases separate as indicated by obscuring of the lamp filament.

The K10090 U-Tube Aniline Point Apparatus is similar to the Thin Film Aniline Point Apparatus but with 'U-Tube' aniline-sample tube and stirrer as developed by Standard Inspection Laboratories. Suitable for samples having 6.5 or lighter ASTM D1500 color. As illustrated in IP2-56, Method D. Consists of U-Tube; 400mL Pyrex beaker; cover assembly with bath stirrer; sample stirrer and cooling coil; 6V lamp with line cord; and drive motor. Requires suitable mineral oil bath medium. Thermometer ferrules and mounting hardware are included.
Immerses four copper test jackets in suitable freezing mixtures at the required depth per ASTM specifications. Available with inlet and outlet connections for circulating refrigerated coolant from an external source. Consists of steel exterior housing with polyurethane enamel finish and all copper interior for corrosion resistance. Removable composition top plate and 1/2" (13mm) cork insulation around interior aid in cold retention. Supplied with copper jackets, gaskets, disks, and thermometer holders for test jars and cooling bath. Order test jars and thermometers separately.
Photo of Ramsbottom Carbon Residue Apparatus. Koehler
The K27100 Ramsbottom Carbon Residue Apparatus determines the 'carbon residue' left after evaporation and pyrolysis of a sample oil in the Ramsbottom furnace, providing an indication of the deposit forming tendencies of fuels and guidelines for the processing of refinery products. Thermostatically controlled coking furnace for five samples. Cast-iron block type furnace reaches the standard test temperature of 550°C (1022°F) rapidly and controls with ±1°C stability. Microprocessor temperature control has °C/°F switchable digital set point and display.
Photo of Automatic Aniline Point Apparatus. Koehler
The K10200 Automatic Aniline Point Apparatus performs aniline point and mixed aniline point determinations automatically by means of a modified thin film technique (ASTM D611 Method E). A platinum immersion heater directly heats the sample/aniline mixture and the aniline point is detected photoelectrically. Temperature is displayed on a large LED indicator. Built-in pressure regulator and solenoid valve permit the use of cooling air for quicker cooling cycles or to determine subambient aniline point temperatures.
Photo of TAG Closed Cup Flash Point Tester. Koehler
The K14600 Tag Closed Cup Flash Testers determine flash points of liquid products by the Tag Closed Cup method. Use for flash point determinations of liquids with a viscosity of below 5.5 centistokes (cSt) at 104°F (40°C) or below 9.5cSt at 77°F (25°C), and a flash point below 200°F (93°C) except cut-back asphalts, those liquids which tend to form a surface film under test conditions and materials which contain suspended solids. Features stepless variable heat control with reference dial for accurate repeat setting of temperature rate of rise per specifications.
Photo of Cleveland Open Cup Flash Tester. Koehler
The K13900 Cleveland Open-Cup Flash Tester determines flash and fire points by the Cleveland Open-Cup method. For flash and fire points of all petroleum products, except fuel oils and those having an open cup flash below 79°C (175°F). Consists of test flame applicator, brass test cup, thermometer support, heating plate and electric heater. Applicator is precisely aligned per specifications and pivots for test flame application at specified temperature intervals. Hinged thermometer support rises to facilitate placement and removal of test cup.
Photo of Front View Distillation Apparatus. Koehler
Front View Distillation Apparatus, Groups 0, 1, 2 and 3 (P2960-1/-4)-Meets all ASTM and related specifications for distillation of motor and aviation gasolines, aviation turbine fuels, naphthas, kerosenes, distillate fuels, natural gasoline, liquid hydrocarbon mixtures and other petroleum products. Consists of fully insulated stainless steel condenser and heater units. Heater unit includes flask support platform, viewing window, 1000W heater with stepless variable control, and rack and pinion heater elevation mechanism with push-turn control knob.
Photo of Koehler Constant Temperature Hydrometer Bath, 12-Place

A versatile constant temperature bath designed for density/gravity determinations of petroleum products at temperatures of up to 195°F (90°C), and also for Reid Vapor Pressure determinations using immersion bombs. Microprocessor PID control provides quick temperature stabilization without overshoot and the unit is protected by an overtemperature control circuit that interrupts power should bath temperature exceed a programmed cut-off point. Dual LED displays provide actual and set point temperature values in °C/°F. Temperature Range: ambient to 250°F (121°C).

Photo of TAG Open Cup Flash Point Tester. Koehler
Determines Tag Open-Cup flash and fire points of liquids at temperatures of up to 325°F (163°C) and flash points of cutback asphalts at temperatures of less than 200°F (93°C). Includes sample test cup, plated brass liquid bath with constant level overflow, pivoting ignition taper with pilot light and reference bead, pivoting thermometer holder, heater and cast aluminum base. Electrically heated model is equipped with stepless variable heat control for accurate control of temperature rate of rise per specifications. Also available with gas or burner. Conforms to: ASTM D1310, D3143.
Photo of Freezing Point of Aviation Fuels Bath. Koehler
Redesigned constant temperature bath for freezing point determinations on fuel samples at temperatures as low as -100°F (-73°C). Accommodates K29700 Freezing Point Apparatus (p3380) and accessory stirrer. Microprocessor PID circuitry provides precise, reliable temperature control within ASTM specified tolerances. Simple push button controls and dual digital displays permit easy setting and monitoring of bath temperature.
Photo of 8- & 12-Unit Oxidation Stability Apparatus. Koehler
Constant temperature baths with solid-state temperature control, calibrated flowmeters and condenser water manifold for oxidation stability tests on fuels and lubricants. Evaluates oxidation stability by subjecting the sample to a temperature of 95°C in the presence of oxygen or dry air. For inhibited mineral oils, the sample is reacted with oxygen in the presence of water and an iron-copper catalyst. Individual flowmeters and control valves for each oxidation cell deliver airflow at the rate of 3L/h. Condenser water manifold has individual control valves for each cell.