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GHL PL-Cali pH4 (PL-0074)

€11,95
pH 4 calibration solution for pH probes. Allows calibration of pH measurements in both fresh and hard water
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GHL PL-Cali pH7 (PL-0075)

€11,95
pH 7 calibration solution for pH probes. Allows calibration of pH measurements in both fresh and hard water
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GHL PL-Cali pH9 (PL-0076)

€11,95
pH 9 calibration solution for pH probes. Allows calibration of pH measurements in both fresh and hard water
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GHL Maintenance-Kit Oxygen-Sensor (PL-0555)

€127,90
Maintenance and repair kit for oxygen sensors. Maintenance may become necessary in case of a defective membrane, poor performance, or other issues
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