
I keep a bottle in my work cart and cap my pH meter weekly. It keeps my tips clean and seems to last longer than other solutions I've tried. I use pure solutions for calibration, so I can't comment on this usage. In terms of storage, this is the best I've found.

Graduated Erlenmeyer Glass Flask Set With Narrow Mouth - 500Ml Capacity
15 Review

3Pcs 500Ml CVNDKN Wash Bottles W/ Scale -16 Oz: Plastic Safety Lab Squeeze Bottle
13 Review

Get Your All-Purpose Cleaning Solution With Bealee'S 24 Oz Plastic Spray Bottles - 2 Pack
16 Review

ULAB Scientific 1000Ml Borosilicate Glass Beaker With Printed Graduation - Durable And Accurate For Lab Use (UBG1005)
12 Review