K25339 Copper Strip Tarnish Test Apparatus
Test Method
The Copper Strip Tarnish Test assesses the relative degree of corrosivity of petroleum products, including lubricating oils. 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.

Features and Benefits
• Conforms to ASTM D130, D6074, D6158 and related specifications

• Accommodates 16 test tubes

• Temperature range to 190°C (374°F)

• Microprocessor temperature control with digital display and overtemperature protection.

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K25339 Copper Strip Tarnish Test Apparatus
Constant temperature bath immerses 16 test tubes for copper strip tarnish tests of products not requiring a test bomb. Microprocessor temperature control 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 double-wall construction with built-in support rack. Fully insulated.

The complete apparatus for the Copper Strip Tarnish Test for lubricating oils consists of:
Test Tube Bath
Copper Strips
Test Tubes
ASTM Copper Strip Corrosion Test Standard
Surface Preparation Accessories

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: 16 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

Electrical Requirements
115V 50/60Hz, Single Phase, 7.5A
220-240V 50/60Hz, Single Phase, 4A

Dimensions Ixwxh,in.(cm)
15.5x12.5x14 (39x32x36)
Net Weight: 27 Ibs (12.2kg)

Shipping Information
Shipping Weight: 45 Ibs (20.4kg)
Dimensions: 12.8 Cu. ft.
Ordering Information
Catalog
Number		 Product Description Electrical Requirements
K25330 Copper Strip Corrosion Test Tube Bath 115V 50/60Hz
K25339 Copper Strip Corrosion Test Tube Bath 220-240V 50/60Hz
K25312 Vented Cork (16)
Accessories
Catalog Number Product Description
K25080 Copper Test Strips
12.5 x 1.5-3.0 x 75mm to ASTM specifications
332-004-004 Test Tube, 25x150mm
332-004-002 Viewing Test Tube
Protects copper strip during inspection or storage
K25100 ASTM Copper Strip Corrosion Standard
Colored reproductions of tarnished strips encased in a plastic plaque.
380-240-001 Silicone Carbide Paper, 240-grit. For polishing copper strips prior to testing. Package of 50 sheets.
380-150-001 Silicone Carbide Paper, 150-grit
380-150-000 Silicone Carbide Grain, 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
When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.
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