Do these come with a certificate of analysis?

Yes, the certificate can be downloaded online by entering the batch number.

Has the usa standard for calibration changed to 4.01 from 4.0 at 25deg? my kit came with a bottle of 4.0 originally?

No, the USA standard has not been changed. The kit comes standard with PH4.00. For the calibration it makes no difference whether you use the supplied PH 4.00 solution or the PH 4.01 solution from this set.

how many uses do you get out of the bottles? (trying to compare it to powder sachets)

Dear customer, the solutions can be reused 10-15 times and do not need to be disposed after each calibration. We recommend filling the required amount of the solution into a calibration bottle or the CalBox (available separately) and closing it after use. After repeated use, the contaminated solution should then be replaced with a fresh one. Best regards The Apera Instruments Team

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pH Calibration Solution 4.01/7.00 each 250 ml, AI1113

Product ID: 104728301

Details

Brand
Apera
Item volume
500
Package information
Bottle
Item form
Powder
Manufacturer
Apera (Europe)

⏳3-year shelf life

📏±0.015 pH accuracy

🧪2x 250ml calibration buffers

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A$76

Duties & taxes included

In stock

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Description

🧪 Calibrate like a pro — precision that keeps you ahead of the curve!

READY WHEN YOU ARE - Pre-mixed, no powder prep—start calibrating immediately
PRECISION PERFECTED - Calibrate with ±0.015 pH accuracy for lab-grade confidence
COLOR CODED CONVENIENCE - Instantly identify pH4 (Red) and pH7 (Green) solutions without guesswork
TRUSTED GLOBAL STANDARD - Backed by 30+ years of innovation and 4.6-star user approval
LONG LASTING RELIABILITY - Up to 3 years shelf life keeps your calibration kit ready for action

The Apera Instruments AI1113 pH Calibration Solution Kit includes two 250ml bottles of highly accurate pH buffer solutions (4.01 and 7.00) with ±0.015 pH precision. Color-coded for easy identification and ready-to-use without mixing, these solutions offer up to 3 years of shelf life, making them a reliable choice for professionals demanding consistent, lab-grade calibration.

Specifications

ASIN	B07FN9W3TW
Best Sellers Rank	77,235 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 131 in Lab pH Meters
Brand	Apera Instruments
Container Type	Bottle
Customer Reviews	4.6 out of 5 stars 523 Reviews
Global Trade Identification Number	00810214030881
Included Components	1 set of Calibration Solutions (1 bottle each)
Item Form	Powder
Item form	Powder
Item volume	500 Millilitres
Manufacturer	Apera Instruments (Europe) GmbH
Package information	Bottle
UPC	810214030881
Unit Count	1.0 Count
Volume	500 Millilitres

Reviews

M**N

does the job.

works fine

9.12.2024

P**A

quality

It does what it suppose to do

12.04.2022

G**A

Great size

Perfect to calibrate my pool ph kit

7.06.2020

K**L

Good

Good product, accurate.

27.02.2021

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