Most of the test paper barrels produced by manufacturers are used for packaging blood sugar test paper, urine test paper and other test paper. Ordinary test paper to moistureproof, sealing oil requirements are higher. Therefore, placing the desiccant inside the bottle cap of the test paper can effectively prevent the test paper strip from getting damp, extend the shelf life of the test paper strip, and also prevent the test paper strip from contacting with the desiccant directly.

48 mm paper bottle

Test paper bottle manufacturers in the selection of desiccant, generally with silica gel desiccant and molecular sieve desiccant. Silica gel desiccating agent is a kind of highly active adsorption material, which is usually prepared by the reaction of sodium silicate and sulfuric acid, and then through a series of post-treatment processes such as aging and acid bubble. Silica gel is an amorphous substance and its chemical formula is MsiO2.NH2O.

Molecular sieve desiccant is a kind of synthetic desiccant product with strong adsorption ability to water molecules. The size of the pore diameter of the molecular sieve can be controlled by different processing techniques. Besides absorbing water vapor, it can also absorb other gases. Water molecules can still adapt well to temperatures above 230 degrees Celsius.

The proportion of desiccant in the bottle cap of the test paper bottle manufacturer is mostly (4:6), but it can also be mixed reasonably according to some special circumstances of the test paper to achieve better moisture-proof effect.