Melzers Reagent QC test Nov 2023 Melzers test bottle 1 -TH – photo A 1000x Melzers test bottle 1 -TH – photo B 1000x Melzers test bottle 2 -TH – photo A 1000x Melzers test bottle 2 -TH – photo B 1000x Melzers test bottle 3 – Current stock – photo A 1000x Melzers test bottle 3 – Current stock – photo B 1000x