Centrifuge

Petrolab Company offers lab centrifuges from LK Industries. The centrifuges are commonly used to measure: water and sediment in crude oil, fuel oil and middle distillate fuel; the precipitation number of lubricating oils and insolubles in used lubricating oils. These centrifuges were designed with the following ASTM Methods in mind: D91, D96, D893, D1796, D2273, D2709 and D4007.

Benchmark C Laboratory Centrifuge
Benchmark C is the first state-of-the-art oil centrifuge with Class I, Division 2 certification. It is ideal for laboratory settings or refineries using 100-mL capacity tube configurations. It is usually installed on benchtops for testing crude oil or refined petroleum products. The fully insulated centrifuge prevents heat loss and allows for more accurate temperature control. Its sturdy outer case is finished with a solvent-resistant powder coating. With a motor capable of operating at 2300 rpm and real-time temperature readings, this unit has unmatched precision in basic sediment and water (BS&W) determination.

Benchmark S Laboratory Centrifuge
The Benchmark S Heated Laboratory Centrifuge is an economical alternative to the Benchmark C unit and offers features distinct from the Melton unit. It meets or exceeds the various requirements for ASTM and API standards. It is designed for determining basic sediment and water (BS&W) content at indoor locations without Class I, Division 2 requirements. It is optimal for laboratory settings or refineries using 100-mL capacity tube configurations. It is preferably installed on benchtops and used to test crude oil or refined petroleum products.


Melton Centrifuge
The Melton oil centrifuge sets the oil testing industry standard. The unit includes four integrated heated cups for crude oil samples, which provide maximum heat transfer. It is compatible with pear-shaped (B), long cone (C), short cone (D) or capillary (E) style centrifuge tubes and available in 115VAC or 220VAC. It features robust, durable construction (steel case) that protects the interior in harsh, corrosive environments such as offshore platforms. The consistent motor speed reduces process variation. The built-in tachometer provides an accurate, direct, mechanical RPM reading. This unit is designed for hard-wiring.




Criterion Water Bath Heater
The Criterion Water Bath Heater distributes 900 watts of heating power. The unit is designed to provide precise heating of solvents and samples prior to use in an oil centrifuge or other equipment. The dimensions of the units have been carefully determined so that the unit will fit comfortably in the fume hood of a laboratory. It has a resistive heating element with RTD temperature feedback to a temperature controller. The resistive heating element is controlled by a solid-state relay. This allows the temperature controller to fail “OFF” if a signal is lost and prevents runaway heating. The Criterion series uses water to transfer heat. The unit can accommodate two 1-gallon bottles of solvent, 14 Long Cone (C) centrifuge tubes, 14 Capillary (E) tubes or 12 Short Cone (D) style tubes. It is preprogrammed to a temperature set point of 140°F (60°C) and can maintain that set point with unrivaled precision.


TradeMark Heater
The TradeMark Heater is a dry block unit built for use on a laboratory benchtop. All units will be certified for Class I, Division 2 Groups A, B, C and D Hazardous and Ordinary Locations. Due to these certifications, the unit requires hard-wiring. The unit is designed to provide precise heating of solvents and crude oil samples prior to use in a centrifuge or other equipment. It has a resistive heating element with RTD temperature feedback to a temperature controller. The resistive heating element is controlled by a solid-state relay. This allows the temperature controller to fail “OFF” if a signal is lost and prevents runaway heating. The TradeMark series uses aluminum to transfer heat to glass centrifuge tubes. It is offered in 110 or 220VAC and available in finger (A), pear-shaped (B), long cone (C) or short cone (D) style tube configurations. The digital programmable temperature controller regulates the temperature and is adjustable from 72°F to 250°F. This allows versatility for use in multiple applications. It features an insulated body to minimize heat loss and heat up the unit more efficiently. The dry bath helps prevent corrosion.
  • Specifications +


    Benchmark C Laboratory Centrifuge
    The digital programmable temperature controller (ambient inner bowl temperature up to 200°F/93°C) provides better process control for testing heavy crude oil. The integrated countdown timer, which shuts down the motor when a test is complete, reduces variation in testing. The internal programmable, solid-state motor controller enables linear acceleration, which results in more consistent testing. Specially designed collars, cushions and shields help reduce glass tube breakage at higher G-forces.

    The Benchmark C features a latching emergency stop button and automatic locking lid (motor will not operate when lid is open; lid will not open while motor is running). It comes with a standard 4-place trunnion arm configuration (compatible with B, C, D or E style tubes) and is available in 120VAC or 240VAC. Because of its Class I, Division 2 certification, the unit requires hard-wiring.

    Applicable Testing Standards:

      ASTM D4007   ASTM D1796   ASTM D2709   ASTM D2273
      ASTM D91   ASTM D96   ASTM D893


    Applicable Safety Standards (Class I, Div. 2 Requirements):

      UL 61010-1   ISA 12.12.01   UL 823 Issue:2006/10/20 Ed:9
      Rev:2012/01/31
      CAN/CSA-C22.2 No. 61010-1   CSA C22.2#213


    Benchmark S Laboratory Centrifuge
    The fully insulated oil centrifuge prevents heat loss and allows for more accurate temperature control. Its sturdy outer case is finished with a solvent-resistant powder coating. The variable speed motor with LCD display ideally operates at speeds of up to 2000 rpm. The integrated countdown timer, which shuts down the motor when a test is complete, reduces variation in testing. Specially designed collars, cushions and shields help prevent/reduce tube breakage at higher G-forces.

    The Benchmark S features a latching emergency stop button and automatic locking lid (motor will not operate when lid is open; lid will not open while motor is running). It comes with a standard 4-place trunnion arm configuration (compatible with B, C, D or E style centrifuge tubes) and is available in 120VAC or 240VAC. The laboratory unit may be hard-wired or a power cord may be purchased separately from L-K Industries.

    Applicable Testing Standards:

      ASTM D4007   ASTM D1796   ASTM D2709   ASTM D2273
      ASTM D91   ASTM D96   ASTM D893

    Melton Centrifuge
    Dimensions: 27” x 27” x 26”
    Weight: 150 lbs
    Available Models:
    • B-4-115-C: 115 VAC, pear-shaped (B) tubes
    • C-4-115-C: 115 VAC, long cone (C) tubes
    • D-4-115-C: 115 VAC, short cone (D) tubes
    • E-4-115-C: 115 VAC, capillary (E) tubes





    Criterion Water Bath Heater
    The Criterion Water Bath heater features digital temperature control, which allows for extended, consistent heating. The design enables efficient rotation of heated solvent or crude oil samples and less down time due to optimal tube capacity. Its modular construction creates versatile options for laboratory configuration. The unit is certified by ETL (Electrical Testing Laboratory) for Class I, Division 2, indoor use. It is rated for Group A, B, C and D Hazardous and Ordinary Locations (Pollution Degree 2). It meets the requirements of ANSI/ISA-STD 12.12.01 and CAN/CSA-C22.2 No. 61010.1 (2nd addition). Due to these certifications, the unit requires hard-wiring. All Criterion water baths feature a stainless-steel tub, which reduces corrosion and makes the bath more robust.

    Dimensions: 26”D x 16”W x 18”H
    Weight: 30 lbs
    Available models:
    • WB-T2-110: 110 VAC, 50/60 Hz, 900W
    • WB-T14C-110: 110 VAC, 50/60 Hz, 900W
    • WB-T12D-110: 110 VAC, 50/60 Hz, 900W


    TradeMark Heater
    Dimensions: 17” x 15” x 19”
    Weight: 28 lbs
    Available models:
    • LAB-H-A110: 110 VAC, 50/60 Hz, 400W, finger (A) tubes
    • LAB-H-B110: 110 VAC, 50/60 Hz, 400W, pear-shaped (B) tubes
    • LAB-H-C110: 110 VAC, 50/60 Hz, 400W, long cone (C) tubes
    • LAB-H-D110: 110 VAC, 50/60 Hz, 400W, short cone (D) tubes




  • Downloads +

  • Standards +


    ASTM D91
    Standard Test Method for Insolubles In Used Lubricating Oils

    ASTM D96

    Standard Test Methods for Water and Sediment in Crude Oil by Centrifuge Method (Field Procedure)

    ASTM D893
    Standard Test Method for Insolubles In Used Lubricating Oils

    ASTM D1796
    Standard Test Method for Water and Sediment in Fuel Oils by the Centrifuge Method (Laboratory Procedure)

    ASTM D2273
    Standard Test Method for Trace Sediment in Lubricating Oil

    ASTM D2709
    Standard Test Method for Water and Sediment in Middle Distillate Fuels by Centrifuge

    ASTM D4007
    Standard Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (Laboratory Procedure)