By francisco Valenz on Wednesday, May 9, 2001 - 12:05 pm:
Need to identify elution fraction of surfactant block copolymer Poloxamer 188 (MW 7500-9500). What instrument should I use for detecting this fraction?
By Anonymous on Thursday, May 10, 2001 - 11:04 am:
Can you be more specific? Do you want to collect samples in this MW range and determine the block ratios, or something else?
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