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Neminath Instruments

Oxidation Stability of Lubricating Grease Apparatus ASTM D942

ASTM D942 apparatus measures oxidation stability of lubricating grease by tracking oxygen pressure drop in a sealed vessel under controlled temperature conditions.

Oxidation Stability of Lubricating Grease Apparatus ASTM D942

Compliance Standard : ASTM D942 – Standard Test Method for Oxidation Stability of Lubricating Greases by the Oxygen Pressure Vessel Method.
Application :  The Oxidation Stability of Lubricating Grease Apparatus is used to determine the resistance of lubricating greases to oxidation when exposed to oxygen under controlled pressure and temperature conditions. The test measures the pressure drop inside a sealed oxygen vessel, which indicates the extent of oxidation. This apparatus is widely used in petroleum refineries, lubricant manufacturing units, R&D laboratories, and quality control laboratories.

Product Description : The apparatus consists of a robust oxygen pressure vessel assembly mounted on a precision-controlled heating unit. It is designed to maintain uniform temperature throughout the test duration and to accurately measure pressure changes due to oxidation. The system is fitted with high-accuracy pressure gauges and safety devices to ensure reliable and safe operation. The equipment provides reproducible and repeatable results in accordance with ASTM D942 requirements.

 

Technical Specifications

Test Method:

Oxygen Pressure Vessel Method

Standard Followed:

ASTM D942

Test Temperature:

99 ± 0.5 °C

Oxygen Pressure:

As specified by ASTM D942

Pressure Measurement:

Dual precision pressure gauges

Vessel Material:

Stainless steel with corrosion-resistant finish

Heating System:

Electrically heated with digital temperature controller

Temperature Control Accuracy:

±0.5 °C

Power Supply:

230 V AC, 50 Hz, Single Phase

Safety Features:

Pressure relief valve, over-temperature protection, safety locking arrangement

 

Apparatus is Supplied With

  • Oxygen pressure vessel assembly

  • Stainless steel sample holders (as per ASTM D942)

  • Dual pressure gauges

  • Digital temperature controller

  • Heating mantle with insulation

  • Safety relief valve

  • Operating instruction manual

Optional Accessories

  • Additional grease sample holders

  • Digital pressure transducer with data logging facility

  • Oxygen gas cylinder with regulator

  • Calibration certificate (traceable to NABL / ISO, optional)

Dimensions and Weight (Approx.)

Dimensions (L × W × H):

450 × 400 × 600 mm

Weight:

35–40 kg

 

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