Thank you for the notification of such problems
the quality control department will know as well as in the standard treatment products the best forever.
1. From the inspection standard 0.05m EDTA there may be products with production since the month 9 / 2014 (lot no.490472) At the last time of 6 months. But we do have not infromation this, and this product can only produce 5 bottle.
2. By attached documents were all produced 5 bottle
3. We will attach a document to method Standardization and Validation sample 0.05M EDTA
4. The company didn't compare with chemical 0.01 M EDTA but it is compared with the 0.05M EDTA only (the same concentration)