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Pre-mixed pH Calibration Solutions
4.00 pH buffer solution 500 mL (1 pint) bottle
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- 1 Year Shelf Life
- Pre-Mixed pH Solutions
- Two Bottle Sizes Available
- Standardized Against NIST Certified Sample
PHA-4 Model Options
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Solution Value
Volume
Formulated to provide precise pH determinations, these buffer solutions which are standardized against N.I.S.T.-certified reference samples, are ideal for calibrating electrodes and pH meters. The buffers are color-coded to avoid error and accurate to within ±0.01 pH at 25°C (77°F). Each buffer contains a preservative/mold inhibitor and a shrink-sealed cap to prevent contamination and leakage. Temperature compensation charts are included with each buffer solution. The shelf life of the buffer solutions are 1 Year.
Rated 4 out of
5
by
christy from
pH buffers
I bought pH buffers in 1 gallon jugs. Good value. Will buy again.
Date published: 2016-06-30
Rated 4 out of
5
by
Jordan from
Great Product DOESN'T COME IN BOTTLES
Ph solution worked as advertised but was disappointed that the solution came in UN-resealable bags. I was under the impression they were in bottles.
Date published: 2020-06-13
Rated 5 out of
5
by
Sara from
PH Buffer Solution
Good Customer service, On time Delivery, Over all no complaints, Good Business! Thank You!
Date published: 2020-04-20
Rated 4 out of
5
by
nkrasco from
Great Samples
We bought these pH buffers solutions for our internal R&D use. So far, they are exactly what we needed. Working very well!
Date published: 2019-04-16
Rated 5 out of
5
by
DirtCamp Brewering from
Great Service
Easy online ordering. Prompt service and reasonable price.
Date published: 2018-05-29
Rated 5 out of
5
by
SheliaA from
Great Calibrated pH Buffers
We are always pleased with the calibrated pH buffers.
Date published: 2018-04-25
Rated 5 out of
5
by
alltatup from
Solid Performance for the life of the bottle
I use about 1 gallon over a nine-month period, and the expiration date on the bottle assures me that it's still accurate. This is a great price for a great product, which is why I will keep coming back to Omega.
Date published: 2017-10-31
Rated 5 out of
5
by
Rex Roto from
Good Service
I bought some items and the website is easy to maneuver and my order shipped quickly
Date published: 2017-09-13
if i'm need the NIST traceable certificate, where i can download this documents?
Thank you for your inquiry. If you had purchased the buffer solution with a NIST certificate, please email sales@omega.com and a Customer Care representative will able to email a copy of the cert.
Date published: 2020-09-09
If buffers are susceptible to contamination, how long are they good for after opening the container?
pH buffer solutions have 1 year shelf life. You should follow the expiration date on the bottle.
Date published: 2020-04-13
Does the Standard Certificate Type provide a NIST traceable certificate or do I have to select the CAL Certification?
Yes
Date published: 2019-10-31