Call us: (732) 777-2040 | Fax: (732) 777-4828 | E-mail: info@lawlercorp.com

PRECISION PETROLEUM TESTING INSTRUMENTS

Copper Strip Corrosion by Petroleum Products – ASTM D130, D1838, D4814 | IP 227 | ISO 2160

 

Copper Strip Corrosion by Petroleum Products

Copper Strip Corrosion by Petroleum Products

Lawler offers a wide range of constant temperature test baths conforming to ASTM D130, D1838, D4048, D4814 Annex, IP227, and ISO 2160 copper corrosion tests for fuel and lubricants. Specify which test method(s) are desired for proper model selection. Pressure vessels are used for more volatile products like gasoline and aviation fuels versus the test tube procedure used for lubricants, diesel, and biodiesel.

Model 279-8 is a stainless steel liquid bath able to accept 8 test bombs and 8 test tubes for the D130 test method. Alternate test racks are available.

The temperature range of Model 279-8 is 40° to +115°C, optionally to 190°C, with temperature stability of ±0.2°C. Temperature is controlled with a digital display controller with 0.1°C resolution. A float switch interrupts power to the bath in the event of low bath fluid level.

The bath is mechanically agitated to insure test point to test point uniformity. A cover over the bath is provided to reduce evaporation (if water is used as a bath medium).

Model 279-12 is identical to Model 279-8 except it is larger and able to accept 12 test bombs 6 test tubes. Alternate racks are available.

Lawler copper corrosion baths are also suitable for the silver corrosion test method that is part of the ASTM D4814 gasoline specification.

Model 279-4 is an insulated stainless steel liquid bath able to accept 4 test bombs holding the test fuel and the silver strip. The temperature range of Model 279-4 is 30° to 150°C with temperature stability of ±0.2°C. Temperature is controlled with a digital display controller with 0.1°C resolution. To prevent overheating, a high limit switch is provided to interrupt power to the bath in the event of primary controller failure. A float switch interrupts power to the bath in the event of low bath fluid level.

The bath is mechanically agitated to insure test point to test point uniformity. A cover over the bath is provided to reduce evaporation (if water is used as a bath medium).

Model 279-8 and Model 279-12 are identical to Model 279-4 except are larger and able to accept 8 and 12 test bombs, respectively.

Model 291-6 is an insulated stainless steel liquid bath deep enough to be able to accept 6 test tubes conforming to IP 227 silver corrosion test method. The temperature range of Model 291-6 is 30° to 150°C with temperature stability of ±0.2°C. Temperature is controlled with a digital display controller with 0.1°C resolution. To prevent overheating, a high limit switch is provided to interrupt power to the bath in the event of primary controller failure. A float switch interrupts power to the bath in the event of low bath fluid level.

Model 295-6 is a solid aluminum block bath deep enough to accept 6 test tubes (350 mm long) as per IP 227. The dry block bath removes the disadvantages of liquid baths, such as smoke, fire hazard, cleanliness, safety, etc.

The ASTM D130 test is used at various temperatures for the following samples:

  • Aviation gasoline, aviation turbine fuel, @ 100°C in a test bomb
  • Natural gasoline, @ 40°C in a test bomb
  • Diesel fuel and fuel oils, automotive gasoline, @ 50° to 100°C in a test tube
  • Cleaners and kerosene @ 100°C in a test tube
  • Lubricating oils @ 100°C and higher in a test tube
  • Solid Block Constant Temperature Baths
  • Liquid Constant Temperature Baths
  • Temperature Range 30° to 180°C
  • Temperature Stability of ±0.2 °C
Model Number Description
279-8 Liquid bath for 8 pressure vessels and 8 test tubes. Alternate racks available
279-12 Liquid bath for 12 pressure vessels and 6 test tubes. Alternate racks available
280-4 4 position aluminum block bath dedicated for test tubes
280-8 8 position aluminum block bath dedicated for test tubes
280-12 12 position aluminum block bath dedicated for test tubes
281-4 Aluminum block bath for 4 pressure vessels
281-8 Aluminum block bath for 8 pressure vessels
281-12 Aluminum block bath for 12 pressure vessels
291-6 Liquid bath for 6 test tubes for IP227 silver corrosion
291-8 Liquid bath for 8 test tubes for IP227 silver corrosion
295-6 Aluminum block bath for 6 test tubes for IP227 silver corrosion

Accessories for Copper Corrosion

Part Number Description
CC-4 Test tube for D130 and D4814, per dozen
CC-4A Test tube for D4048 Grease Corrosion, ea.
CC-5 Test pressure vessel for D130 and D4814 Annex, ea.
CC-6 Viewing test tube, ea. Has flat side for distortion free viewing
CC-7 Copper test strip/coupon, ea.
CC-8 Copper corrosion ASTM color standard, D130, ea.
CC-9 Test strip polishing vise
CC-10 Test pressure vessel, ea. D1838 LPG
CC-11 Transfer Hose, ea D1838 LPG. 36” std (24” or 48” also available, same price)
CC-14 Insert for converting 1 aluminum block bath pressure vessel hole to test tube hole for D130, ea. Option for 281-4, 281-8
CC-15 Insert for converting 1 aluminum block pressure vessel hole to test tube hole for D4048, ea. Option for 281-4, 281-8
CC-16 Split sleeves. D130 pressure vessels have hourglass shape. Split sleeves improve heat transfer in aluminum block baths. Required for 281-4, 281-8
CC-20 Rack for 279-8. 12 Pressure vessels Optionally purchase or no charge substitute for default rack
CC-21 Rack for 279-8. 16 Test tubes Optionally purchase or no charge substitute for default rack
SCP-15 CAMI grade 150 grit silicon carbide paper, 50 sheets (closest to European FEPA P150)
SCP-24 CAMI grade 240 grit silicon carbide paper, 50 sheets (closest to European FEPA P280)
SCG-15 Silicon carbide grains/powder, 150 mesh, 450 grams
SC-31 Silver test strip/coupon for D4814 Annex, ea.
SC-32 Silver corrosion ASTM color standard, D3241, ea.
SC-TA Silver corrosion glassware (test tube, cold finger, glass cradle/specimen holder), IP227 only
PA-20 PAO bath oil, 20 L pail
SO-10 Silicone bath oil, 20 L pail

Suggestions for ordering accessories:

  • Test tubes and pressure vessels. One per position, minimum.
  • D130 copper and D4814 silver corrosion tests are not long tests, so a pressure vessel for each test position, which is expensive in relation to the overall cost of the bath, may not be needed. Also consider the frequency of testing.
  • When ordering D130/D4814 pressure vessels, additionally one test tube is required for insertion into each pressure vessel with the test sample.
  • One Viewing Test Tube is generally purchased for each test position. After each test the copper strip is placed inside so that it is not contaminated by touching during observation. Less viewing test tubes may be ordered depending on the frequency of testing and whether or not all test samples are to be reviewed simultaneously for result.
  • Copper and silver test strips, as specified in the methods, are required for each test position. They are re-usable by polishing with sandpaper and/or silicon carbide powder in a special vise. They are consumable so 6-12 (or more) spares should be ordered.
  • One Polishing Vise is required to hold the test strip without touching while it is polished.
  • Inserts convert the larger bore pressure vessel holes in blocks for use with a test tube and maintain good heat transfer. One per position.
  • Split Sleeves are required for each pressure vessel used in the pressure vessel block baths. One set per position.

 

Top