Buffer Solution pH4.00 (Red) Twin Neck Bottle Format (250ml - 1 Litre)

pH Buffers are available in an attractive and innovative twin neck bottle.

Twin Neck Bottles Main advantages:

• No possibility of contamination.
• No need for a separate measuring container for use in the calibration of the Electrode
• Correct quantity of buffer required for calibration is dispensed into the calibration chamber giving rise to no waste.
• Ideally suited for field work.
• Easy to carry.
• 250ml, 500ml and 1 L sizes available.

These pH standards are manufactured to exacting specifications with an extended shelf life and cover the pH range of pH1.00 to pH13.00 inclusive. All are supplied with a detailed Certificate of Analysis which shows tractability to N.I.S.T. The Lot No. of the N.I.S.T SRM(s) is stated on the certificate. Temperature dependence data is printed on the label, as are lot numbers and expiry dates.