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If you mean HPMC: Hydoroxypropylmethylcellulose then you need to:

1-heat 100ml of DW (deionized water) to 80-90c

2-weight HPMC grams you need to dissolve(1-5%)

3-added HPMC gradually to about 1/4 of water(25ml) while strong mixing is needed

4-then prepare 3/4 of left water with ice in it

5-then added ice water to solution while mixing and you will end in clear solution of HPMC

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