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).

Bluelab pH 4.0 Calibration Solution - 250 ml
- Includes 250 ml/8.4 fl oz
- Extend your pH product's lifespan with routine cleaning and calibration
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 Solutions should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.
Country USA
Brand Bluelab
Manufacturer Bluelab
Binding Unknown Binding
ItemPartNumber 732897
Model HD4CAL250
UPCs 791090263023
EANs 9421024920289
ReleaseDate 0000-00-00

Bluelab pH 4.0 Calibration Solution - 250 ml