Without seeing all the instructions for your 4% HCL, I don't have any idea what that means.
If you are following a MMS protocol that uses MMS1, you mix equal amounts of MMS and 4% HCL, 1:1, as many drops as needed, only counting the MMS drops. One drop of MMS mixed with one drop of 4% HCL is a one drop dose of MMS1.
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