The kit contains 200 drops, which if used with caution, should test about 200 pills, however, the dropper often lets out more than a drop if you aren't careful.
Keep the kit upright at all times, and the liquid should keep for at least a few months. Keeping it upright prevents the dropper from getting immersed in the reagent, which is acidic, and will react with the dropper, causing it to spoil
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