... inside our gel, it's very stable , could be stored in normal temperature , and 1-2 years at least . if ... ~10ml Label printing onto syringe/pen is available !3,Gel strips and dry strips in HP & CPMOQ for OEM, 3000- ... ,Teeth cleaning liquid 6,Toothpaste 7,Gum barrier/ gum dam in 1-5 ml 7, Accessories: mouthtrays, retractors, finger teeth ... gel,peroxide free,zero peroxide,neutral PH.,3ml,,5ml,paypal is ok