Is the liquid safe?

Yes. Please contact us for the MSDS for further information. We only use food-grade oils and non-toxic colourants in our formulation.

In the unlikely event that the liquid leaks from the indicator and comes into contact with skin, simply wash with soap and water. If the liquid comes into contact with eyes, rinse immediately with plenty of water and seek medical advice.

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What if one of the indicators in the box is showing the indication window already blue before I’ve squeezed it?

If stored under the correct conditions, this is highly unlikely to happen, but if it does, the built-in activation window lets you know it. If this happens, don’t use the indicator and select another. There is no need to contact us, as we ship 1 or 2 extra indicators per pack free of charge anyway.

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How does Blood Temp 10 work?

A blue dye housed in a blister is held adjacent to a micro-porous membrane. Upon squeezing the activation button the dye comes out of the blister and into contact with the membrane. The temperature of the chilled blood bag solidifies the liquid, and thus unable to move through the membrane. If the temperature rises to or above the threshold temperature of 10°C/50°F, the dye changes to liquid form, moves through the membrane and indicates a breach when blue dye shows up in the indication window.

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Why is there an activation window and a breach window?

The activation window gives an immediate confirmation that the indicator is armed as it turns from yellow to green. If this doesn’t happen immediately, then fully re-squeeze the button between thumb and finger. The breach/indication window (white with a red border) is separate so that you can clearly see if there has been a breach of the 10°C/50°F temperature threshold. If no breach has occurred the window will remain white. It will turn blue if there is a breach.

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