Specification of Koehler K25339 Copper Strip Corrosion - Test Tube Bath
Test Method
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.
Specifications
Conforms to the specifications of: ASTM D130, D6074, D6158; FSPT DT-28-65; IP 154; ISO 2160; DIN 51759; FTM 791-5325; NF M 07-015
Capacity: 17 test tubes
Maximum Temperature: 190°C (374°F)
Temperature Control Stability: ±1°C (±2°F)
Heater Range: 0-750W
Bath Medium: 5 gal (18.9L) water or high temperature heater transfer fluid
Description
Constant temperature bath immerses 17 test tubes for copper strip tarnish tests of products not requiring a test pressure vessel, including: diesel fuel, fuel oil, automotive gasoline, Stoddard solvent, kerosene and lubricating oil. Microprocessor temperature controller has °C/°F switchable digital setpoint and display. Operator and equipment are protected by an overtemperature control circuit which automatically interrupts power to the unit should bath temperature exceed a programmed cut-off point. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information. Welded stainless steel inner wall and powder coated steel outer wall construction with built-in support rack. Fully insulated.
Electrical Requirements
115V 60Hz, Single Phase, 7.5A
220-240V 50/60Hz, Single Phase, 4A
Additional Accessories
- K25330-8B Optional test Pressure Vessel Rack
- K25330-4B-8T Optional Rack, 4-Pressure Vessel, 8- Tube
- K25330-6B-6T Optional Rack, 6-Pressure Vessel, 6-Tube
- K25080 Copper Test Strip - 12.5x1.5-3.0mm x 75mm to ASTM specifications
- 332-004-004 Test Tube - 25 x 150mm
- 332-004-002 Viewing Test Tube - Protects copper strip during inspection or storage
- K25100 ASTM Copper Strip Corrosion Standards - Colored reproductions of tarnished strips encased in a plastic plaque
- 380-220-001 Silicone Carbide Paper, FEPA Grade, 220 grit - For polishing of copper strips prior to testing - Pack of 50 sheets
- 380-150-003 Silicone Carbide Grain, FEPA grade, 150 grit - For final polishing of copper strips prior to testing - 1 lb package
- K25000 Polishing Vise - Holds copper strip firmly in place without marring the edges. Stainless steel, mounted on a composition base
- K25090 Multi-Strip Polishing Vise - Similar to K25000 but capable of holding four strips at a time
- 250-000-12F ASTM 12F Thermometer. Range: –5 to +215°F
- 250-000-12C ASTM 12C Thermometer. Range: –20 to +102°C