What is the self life?

pH 4.00 and pH 7.00 receives a 2 year expiration from the date of manufacture. pH 10.00 receives a 1.5 year expiration from the date of manufacture.

Does the certificate have any additional costs?

No. The certification(s) are included with the shipment at no additional cost.

Where can i find the buffer ph vs. temperature table that commonly comes with ph calibration buffers? not just the two values on the front.

It can be found on the this product page under the 'Downloads' option. Here's the link. https://images-na.ssl-images-amazon.com/images/I/81i3MCq4otL.pdf

how much is needed to calibrate a pen? How long does this usually last calibrating 1/week/min?

Depends on the pen size. the myron L pen with cup for the it'll be about 3oz for a triple rinse and calibrate. So 5 weeks since it's about 16.9oz. but other pens require more.

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Biopharm pH Calibration Buffer 3-Pack, 500 mL (1.06 Pint) Each: pH 4.00, pH 7.00, and pH 10.00; NIST Traceable Reference Standards for All pH Meters

Biopharm pH Calibration Buffer 3-Pack, 500 mL (1.06 Pint) Each: pH 4.00, pH 7.00, and pH 10.00; NIST Traceable Reference Standards for All pH Meters

Product ID: 31398438

Details

Brand
Biopharm
Item Form
Liquid
Item Volume
500
Manufacturer
Biopharm Inc
Package Information
Bottle

🎨Color-coded for quick ID

📏NIST-traceable precision

🧪500 mL lab-grade bottles

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Description

📊 Calibrate with Confidence — Precision that Powers Progress

LAB GRADE VERSATILITY - Perfect for pharmaceutical, academic, research, and industrial pH meters.
INSTANT IDENTIFICATION - Color-coded bottles eliminate guesswork and speed up your workflow.
TRACEABILITY YOU CAN TRUST - Unique lot numbers and expiration dates for full quality control.
GENEROUS VOLUME READY TO USE - Each 500 mL bottle supports multiple calibrations without frequent reordering.
CERTIFIED ACCURACY GUARANTEED - NIST SRM calibration ensures lab-grade precision every time.

This 3-pack of pH buffer calibration solutions includes pH 4.00, 7.00, and 10.00, each in 500 mL color-coded bottles. Manufactured under strict lab conditions and standardized against NIST reference materials, these solutions provide reliable, traceable accuracy for all pH meters. Ideal for professional labs across pharmaceutical, academic, research, and industrial sectors, each lot is uniquely numbered and expiration dated to ensure quality and shelf life exceeding one year.

Specifications

ASIN	B01E7U873K
Best Sellers Rank	#12,216 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Chemical Buffers
Brand	Biopharm
Brand Name	Biopharm
Container Type	Bottle
Customer Reviews	4.8 out of 5 stars 149 Reviews
Item Form	Liquid
Item Volume	500 Milliliters
Manufacturer	Biopharm Inc
Package Information	Bottle
Part Number	BB8886X
UPC	721272377101
Volume	500 Milliliters

Reviews

C**G

Works great.

20.01.2026

B**D

Exactly what I was looking for

Works great 💪

4.03.2025

J**A

Product

Quality product and good value. Easy to use and very accurate. Performs well.

4.06.2024

A**R

Very good for calibrating our equipment

These came clearly marked and the different colors add to the security of using the correct product for the calibration.

8.11.2023

T**R

Works

15.02.2025

B**A

Gets the job done

I use this solution to calibrate all of my various ph meters & it works as it should. The solutions are the accurate ph. I have not tried to use it to calibrate the one meter I have that requires slightly different ph levels than the ones included.

2.11.2021

R**E

pH Meter Calibration Solutions 4, 7, 10

Works for the purpose of general laboratory pH meter calibration, good value for the money. Containers are easy to open, and the quality is good. The presented Appearance / Color is based on the amount of pigment / dye / or contents used, when placed into 30mL sample vial the color is more opaque.

6.01.2026

J**S

For Brewing

Bought this set for a brewery and they are exactly what I needed for PH testing.

5.08.2023

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£42.32

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In stock

Sold byAmazon UKDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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TrustScore 4.5 | 7,300+ reviews

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