This buffer value is widely used in water purification plants, in the food industry, and wherever the pH is expected to be slightly acidic
Hanna Instruments ph 4 Buffer Specs:
- Traceable to NIST standards
- Available in bottles or sealed sachets, complete with or without a certificate of analysis
- Multiple resolutions for better accuracy
NIST Traceability
Standardized using a pH meter calibrated by means of two standard solutions prepared from NIST standard reference materials.
Color Coded Soultions
An added dye makes it easy to tell which pH buffer you are using.
Certificate of Analysis
A Certificate of Analysis (COA) is available for each batch of buffer solutions. Supplied or available on request.
Lot Information
The production batch number and expiration date are reported on all Hanna calibration solutions.
Safety Data Sheets
Safety data sheets for all Hanna solutions are available at hannainst.com or upon request.
Reference Temperatures
Provided with a label presenting a reference table of the relationship between pH or conductivity values and temperature.
Sachets
Each sealed sachet holds just the right amount of solution making every sachet as fresh as the day it was packaged! Perfect for use with testers and portable meters!
Bottles
- Air-tight bottle with a tamper-proof seal of freshness to ensure quality.
- Opaque bottle reduces light exposure that could alter the buffer value.
FDA Approved Bottles
- Air-tight bottle with a tamper-proof seal of freshness to ensure quality.
- Opaque bottle reduces light exposure that could alter the buffer value.
