I ordered a TaqMan environmental master mix last month (April 2018) intending to use it over the next 6-8 months for a series of experiments requiring me to quantify pathogen abundance in soil. The Mastermix product that has arrived expires July 2018. I am aware they generally have a shelf life of 1 year but was hoping to have one that would last for longer that 3 month.
Wondering what peoples experiences are with 'expired' mastermixes? How long after expiry is true expiry and how has out of date products potentially impacted your results?