Bio-Rad Criterion™ TBE-Urea Precast Gels - Manual (Page 9)

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1.5 Storage Conditions
Table 1.2. Storage conditions for Criterion precast gels. Store gels flat. Shelf life is from date of manufacture; expiration dates
are printed on the cassettes.
Storage Temperature Gel Formulation Shelf Life
Ambient Criterion XT Bis-Tris 12 months
2–8°C Criterion TGX 12 months
Criterion TGX Stain-Free 12 months
Criterion Tris-HCl 12 weeks
Criterion Stain-Free 12 weeks
Criterion XT Tris-acetate 8 months
Criterion Tris-Tricine 12 weeks
Criterion IEF 24 weeks
Criterion zymogram 8 weeks
Criterion TBE 12 weeks
Criterion TBE-urea 8 weeks
1.6 Important Notes
Use each Criterion precast gel as soon as possible after removing it from the storage pouch.
Improper storage of Criterion precast gels can produce numerous artifacts.
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Store gels flat
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Avoid prolonged storage at temperatures above those recommended
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Do not freeze gels
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If you suspect your gels have been stored improperly, discard them
Do not run more than one gel type in the same apparatus at the same time. Different gel percentages
and formulations have different conductivities and different run times.
Use unstained standards with Criterion TGX Stain-Free and Criterion Stain Free gels, as some
prestained standards are not detected by the Gel Doc
™ EZ imager. To monitor electrophoresis, use
10 µl of a 1:1 mixture of Precision Plus Protein ™ unstained and prestained standards.
Instruction Manual and Application Guide