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hollow cone
Leap pH Probe is safely stored and ready to start measuring straight away
Built to last
1520 & 1170- RPM: (High/Med/Low) 1000
As a result
Bluelab pH 7.0 Calibration Solution 500ml Carbon hollow coneBluelab pH 7. 0 Calibration Solution pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7. 0 first (buffer) then to pH 4. 0 (slope). Calibration Solution should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.
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