Hach 2947600 pH Buffer Solution Kit, Color-Coded, pH 4.01, pH 7.00 and pH 10.01, 500 mL Each

Good product and nice that it comes as a kit

Recently realized that the 10.01 solution had expired in September. I placed that order in October.I did not realize it until i had placed another order, and low and behold, the 10.01 solution on this latest one is also expired.stop selling expired products.

I was surprised to find out that the dates were so far off between buffers. In my batch which all came in the same box had 4.0 Exp Nov 21, 7.0 exp Nov 19, 10.0 exp Oct 18. I ordered May 19, 2018 so I got about 5 months out of the 10.0 I had to go directly to HACH and order just the blue buffer it was $14.50 all by itself. Although they said the 10.0 does have a shorter shelf life then the others, but still Not Thrilled with this purchase!

The pH 10.01 buffer (blue) is expired. September 2021, it is now October. The 7.00 expires in a year. The 4.01 is the only one with a reasonable expiration date.

This the second one with the 10.01 out of date....annoyed

Buffer solution (10.0 and 7.0) has a short exp. date (Oct-18)