Name: Hanna HI7004M pH 4.01 Buffer Solution - 230mL Calibration Standard
Brand: HANNA Instruments
SKU: HI7004M
Price: 26.99 USD
Availability: InStock

Hanna HI7004M pH 4.01 Buffer Solution - 230mL Calibration Standard

This buffer value is widely used in water purification plants, in the food industry, and wherever the pH is expected to be slightly acidic.

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 Solutions

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.

Choose Your Series

HI7000 Series (Standard)

Basic buffers that suit most users
Certificate of Analysis (COA) on request
Accuracy of ‚±0.01 pH @ 25‚°C

HI5000 Series (Technical)

Best for routine lab analyses
Supplied with Certificate of Analysis
Accuracy of ‚±0.01 pH @ 25‚°C

HI6000 Series (Millesimal)

Best for increased accuracy in the lab
Supplied with Certificate of Analysis
Accuracy of ‚±0.002 pH @ 25‚°C

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 prevents light exposure that could alter the buffer value.