Warmmark Long Time Low Temperature Indicator Label

Warmmark: This device monitor whether a product has been exposed to temperatures above a predetermined threshold.
A red dye is released onto a blotter toclearly indicate the duration of the exposure.
Specification
keyword:temp recorderWorking principle
If this label is exposed in the temperature environment that higher than its reactive temperature,chemical things inside of it will turn to red and start to flow along with inside tube. It has 3 round windows, it takes some time when chemical things flow to every window. Thus, time of turning red can be calculated. Chart below will show that. 
(The time below refers to the time when the labels are exposed in its activation temperature more than 2°C and then all window change color completely)

Why Choose us?
1.Customer first, quality first and integrity first!
2.Flexible production and management methods make us stronger and stronger
3.Wide cooperation relationship with countries and regions such as America, Europe, Asia , etc.
4.Professional manufacturer technique supports and great service.
5.Fast delivery and safe shipping way.
6.Providing excellent protection for your goods. 
Shipping Method:
1) Fast delivery: By Express courier, such as DHL,FedEx, UPS and EMS
2) Cheap way: By air or by sea shipment.

Payment Terms:
T/T,Paypal, Western Union,MoneyGram