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This study examines the effect of varying pH levels (7.0 and 5.0) and incubation hours on OD550 values of NH4CL at concentrations of 20 mM and 40 mM. The results are presented in Figure S1.
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A B THB only THB only * OD550 Value * OD550 Value ** ** ** * pH 7.0 pH 5.0 * Hours Hours C D 20 mM NH4CL 20 mM NH4CL ** OD550 Value OD550 Value * ** ** pH 7.0 pH 5.0 ** ** * * Hours Hours E F 40 mMNH4CL 40 mMNH4CL * * OD550 Value OD550 Value * * * * * * ** * * pH 7.0 pH 5.0 *** * * ** Hours Hours Figure S1