Nov. 25th, 2019
Most glass vials will remain intact at -4. At room temperature, short-term storage test samples do not require any special precautions and can be stored in glass vials containing organic solvents at temperatures as low as -80. However, a vial cap made of polypropylene in particular must be used. Because these materials become more and more brittle at temperatures below 0. Here are some rules to follow when freezing glass vials:
When our vials are used as storage glass vials, it is important to avoid direct sunlight. It is best to place it on a plastic vial rack while it is stored and thawed.
During thawing of many liquids, especially when the sample contains a large amount of water, it puts considerable pressure on the sealed container and may cause it to burst. Therefore, when a liquid sample is stored at a low temperature, the sample cannot fill the entire container.
At extremely low temperatures,snap ring sample vials are not recommended. Glass vials used at low temperatures should have a large internal volume and small openings, such as 8-425 screw neck vials, ND8, small opening and 11mm clear crimp vial, ND11. However, operational considerations must be followed by opening the top with a closed cover or bonding diaphragm.When the vial is stored in a low temperature for a long time, it is recommended to seal the vial with compression or screw cap.
Thawed freezing vials
Frozen vials must be treated with extreme care. In general, glass vials crack when exposed to sharp temperature changes (especially amber vials) . So please don't keep cold vials in a warm place and avoid bumping. Placing a vial on a metal object also increases its chances of breakage.
It is important to note that the temperature of the vial will gradually approach the temperature of the external environment. In addition, if the temperature inside the vial is not the same as the temperature outside, it is best not to touch or hit it.
Warm freezing vials
It should allow the vials to warm gradually. To warm glass vials should avoid drastic changes in temperature.It is not recommended to use a water bath, hot water tank, oven or other hot source to warm the glass vials. It is most reasonable to defrost the glass vial slowly through heat conduction at room temperature. Vials whose temperature is below -20 should be put in the refrigerator from -4 to 0 first, which reduces the risk of damage.
PTFE/ silicone rubber spacer
They are used to block the temperature below -40. When the temperature drops to -80, the PTFE/ silicone rubber spacer still maintains a good sealing performance, but it is important not to tighten the vial cap too tightly. The vial cap should be tightened without obvious deformation of the spacer. Please note that the temperature range of PTFE/ silicone rubber spacers we release is above -40℃.This range is the temperature at which water solidifies without breaking the bottle.
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