Please see the information below addressing each question:
Are the bags inert?
The bags are made of low-density polyethylene (LDPE). According to the literature, LDPE may leach over time and at high temperatures. This product is not tested for leachability.
Are the bags leakproof and able to be sealed securely?
The bags feature a flat wire/zipper closure that is considered leak-proof.
See the link below to review a video of the closure:
https://www.youtube.com/watch?v=vHExgWZJ0tY
Are the bags solvent-resistant?
Polyethylene (PE) can withstand aqueous solutions of salts, acids, and alkalis. It is not considered to be compatible with most organic solvents.
See the link below for LDPE compatibility information:
https://www.cdf1.com/technical%20bulletins/Polyethylene_Chemical_Resistance_Chart.pdf
Does the operational temperature include a range of 50 - 80°C?
The temperature range of the product is -210 - 82°C