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Questions related from Dokyeoung Lim
Hi, I'm going to separate PSSs STD mixture(PSS MW 16500,8890,5580,1690) with HPLC SEC column(jaigel gs310). I prepared the STD mix by mixing each of the standard substances at about 10 mg/L in a...
17 January 2022 5,729 1 View
I am trying to analyze dissolved organic matter with protein pak. Usually, it is normally operated at 0.7ml/min and 2.1MPa, but when the column pressure is suddenly operated at 0.7ml/min, it is...
10 January 2022 3,897 2 View
I want to measure the molecular weight of organic substances using HPLC SEC. At this time, I want to use polystyrene sulfornate as the molecular weight standard material to be used. Do I have to...
15 December 2021 7,906 3 View
I'm trying to pack an XK16/70 Column with a Toyopearl hw-50s, but I have some questions. Question 1. I am not sure how many mL of % sludge should be prepared when packing the column. ID is 16mm...
10 December 2021 2,157 2 View
I measure the same substance (sewage treatment plant influent) every day to see how it changes (molecular weight, etc.), so I measure SEC-UV every day. Question 1) When measuring SEC, what do you...
12 November 2021 2,849 3 View
I want to pack xk16 column packing with Toyopearl hw-50s. Question 1. When packing with toyopearl hw-50s, fines need to be removed, but then the resin should be washed several times with the same...
01 January 1970 434 13 View
