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Apera Instruments

Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

  • Based on 1,382 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Nov 29 – Nov 30
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Style: pH 7/4 (8 oz)


Features

  • Reported values are accurate to +/- 0.01 pH at 25 C and are traceable to NIST Standard Reference Materials (SRMs).
  • Produced in an ISO 9001:2015 certified facility using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment.
  • color-coded for quick identification.
  • Double-sealed. 2-year expiration from manufacture for an unopened bottle.

Description

Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each. Apera pH calibration buffers are produced in an ISO 9001:2015 facility with ISO 17025:2017 accreditation using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment. Reported values are accurate to +/- 0.01 pH at 25°C and are traceable to NIST Standard Reference Materials (SRMs). MSDS documents are downloadable. Certificate of analysis can be achieved by request. All pH buffers have a 2-year expiration from manufacture for an unopened bottle.

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 2 x 8 x 2 inches; 8 ounces


Item model number ‏ : ‎ AI1113


Date First Available ‏ : ‎ August 14, 2017


Manufacturer ‏ : ‎ Apera Instruments


Best Sellers Rank: #4,191 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #1 in Chemical Buffers


#1 in Chemical Buffers:


Customer Reviews: 4.6 4.6 out of 5 stars 1,382 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 29 – Nov 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great design, perfect ph.
Style: pH 7/4/10 (16 oz) + CalPod
Works as intended for my ph meter. Great design for solution storage and ph meter holder.
Reviewed in the United States on November 1, 2025 by Amazon Customer
    • Highly recommend good product
Style: pH 7/4/10 (8 oz) + KCL
Seems to be a good quality product
Reviewed in the United States on September 7, 2025 by MarkGadow
    • Good value for pH references
Style: pH 7/4 (8 oz)
These are the go-to reference solutions for testing the acid levels in wine. This brand has a 2-year expiration date. The coloration of these references makes it easy to not mix them up.
Reviewed in the United States on October 10, 2025 by T. Shoup
    • Works and seems to be an accurate reference material.
Style: pH 7/4 (8 oz)
My only gripe is that it smells very strongly of wintergreen. Your instrument will smell of wintergreen even after you rinse it, meaning something is left coating your sensitive and highly expensive ph meter. This doesn't seem to impact performance however. And other reference materials are not as fairly priced, so its a good buy. My bottles arrived leak-free and were packaged well. I would reccomend this product as long as you can stand the minty-fresh smell that hangs around on your instrument for several days. Atleast it smells fresh i guess! ... show more
Reviewed in the United States on November 24, 2024 by theweatherman
    • A must-have!!
Style: pH 7/4/10 (8 oz)
Bought this for my Apera Ph60 pen!! I love using this stuff over the buffer powder!! Seems WAY more accurate!! Quicker reading in my opinion!! Super easy to use!! Everything arrived safely with no leaks! Thank you very much!!
Reviewed in the United States on November 4, 2025 by erren glover
    • great for the class room or plant pH control
Style: pH 7/4 (8 oz)
Some plants need specific pH water to thrive. I use this to balance the number to where I want. ofcourse youll want to be in the lower ranges but they work great. Containers are well built and dont leak. I checked the pH with some strips and the levels were bang on. I thought for the price it was worth it. ... show more
Reviewed in the United States on September 27, 2025 by J. L.
    • Bought mostly for the CalPod
Style: pH 7/4 (16 oz) + CalPod
I bought this kit of the 4 cal, 7 cal, and CalPod mostly for the CalPod. I like that calibration solution can be added for use that can then be sealed off to keep for a short period of time as well as be a nice modular solution holder to make calibration easier. I looked around to just buy the CalPod, which I could only find for ~20 at the cheapest. So, I bought the kit to get some calibration solution and the pod. It comes with some little labels for more than just pH, which is nice because I also wanted to do some EC calibration. ... show more
Reviewed in the United States on January 8, 2025 by Ilium
    • Works as advertised
Style: pH 7/4 (8 oz)
Works as advertised
Reviewed in the United States on October 5, 2025 by Jim D

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