PH Buffers, For Industrial

(certified from an accredited laboratory. 5 -year stability and easy handling) features: convenient 250 ml and 500 ml plastic bottle with built-in calibration compartment economical, since only about 20 ml of buffer is used per calibration actual value is determined by a dkd laboratory, accredited for ph measurement first class certificate with traceability to international standards expiration date on the bottle immune to micro-organisms phbuffers available as: solution, tablets, powders & concentrates