Portable pH Testers

Portable pH Testers

At the cost of a few rolls of pH litmus paper, you can now have the industry’s latest electronic pH tester. Checker® supplies you with fast and accurate readings on a large LCD. Unlike other pH testers, the Checker® electrode can be changed and any pH electrode of different shape or size can be used. Checker® is also suitable for checking electrodes in tanks and various other laboratory applications. The extended family of Checker® pH testers now includes standard gel-filled electrodes with built-in BNC or screw-type connectors. Checker® is supplied complete with electrode, 2 x 1.4 V batteries and instructions. Order your Checker® according to your needs and the type of electrode most suitable for your application:

Item# Description U.S. List Price Quantity
72-1924 Skincheck® 1 with 1 m (3.3 ft) long Cable and Replaceable Electrode with BNC Connector
72-1923 Skincheck® with Short 50 mm (2 in) Replaceable Electrode with Screw-type Connector
72-6089 Checker® 3 pH Meter, Stick Model with Replaceable 72-6090 Professional Full-length Gel-filled pH Electrode
72-4196 Checker® 2 pH Meter, Stick Model with Replaceable 72-4198 Professional Full-length Gel-filled pH electrode
72-4195 Checker® 1 pH Meter, Stick Model with Replaceable 72-4197 Screw-type, Combination, pH Electrode
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• Unsurpassed simplicity of pH measurement


• Modern substitute for Litmus paper with replaceable electrode


• Large and easy-to-read LCD


• High accuracy with 0.01 pH resolution


• Two point fast and accurate calibration


• Usable with virtually any pH electrode


• Battery life: 3,000 hours of continuous use


• Wide range: 0.00 to 14.00 pH


• Replaceable pH electrode
At the cost of a few rolls of pH litmus paper, you can now have the industry’s latest electronic pH tester. Checker® supplies you with fast and accurate readings on a large LCD. Unlike other pH testers, the Checker® electrode can be changed and any pH electrode of different shape or size can be used. Checker® is also suitable for checking electrodes in tanks and various other laboratory applications. The extended family of Checker® pH testers now includes standard gel-filled electrodes with built-in BNC or screw-type connectors. Checker® is supplied complete with electrode, 2 x 1.4 V batteries and instructions. Order your Checker® according to your needs and the type of electrode most suitable for your application:


• Checker® 1 - Stick model Checker® with replaceable BS4 72-4197 screw-type, combination, pH electrode.


• Checker® 2 - Stick model Checker® with replaceable BS4 72-4198 professional full-length gel-filled pH electrode and screw-type connector.


• Checker® 3 - Stick model Checker® with replaceable BS4 72-6090 professional full-length gel-filled pH electrode and BNC-type connector.


• Skincheck® - This version is supplied with a short 50 mm (2 in) replaceable electrode incorporating a screw connector. It is supplied complete with BS4 72-1926 pH Electrode, 2 x 1.4 V batteries and instructions.


• Skincheck® 1 - This verison is supplied with a 1 m (3.3 ft) long cable and a replaceable electrode with BNC connector. It is supplied complete with BS4 73-1925 pH electrode with 1 m (3.3 ft) cable, 2 x 1.4 V batteries and instructions.
Specifications72-192472-192372-608972-419672-4195
Battery Life  approximately 3,000 hours of continuous useapproximately 3,000 hours of continuous useapproximately 3,000 hours of continuous use
Battery Type  2 x 1.4V2 x 1.4V2 x 1.4V
Electrode  BS4 72-6090BS4 72-4198BS4 72-4197
Environment (RH)  95%95%95%
Environment (
Environment (
Meter Dimensions (H x W x D) English  2.6 x 2 x 1 in2.6 x 2 x 1 in2.6 x 2 x 1 in
Meter Dimensions (H x W x D) Metric  66 x 50 x 25 mm66 x 50 x 25 mm66 x 50 x 25 mm
Typical EMC Deviation of pH  
Weight English  2.5 oz2.5 oz2.5 oz
Weight Metric  70 g70 g70 g
pH Calibration  Manual 2 points through trimmersManual 2 points through trimmersManual 2 points through trimmers
pH Range  0.00 to 14.000.00 to 14.000.00 to 14.00
pH Resolution  0.010.010.01