The TSK-GEL standards product line consists of bulk quantities polystyrene and polyethylene oxide standards of varying molecular weight. For premixed PStQuick calibration standards click here. The standards are primarily used to calibrate size exclusion columns for subsequent analysis of unknown samples. The available polystyrene standards range from 400 to 21,000,000 Da while the polyethylene oxides range from 18,000 to 1,000,000 Da. All standards are tested to certify quality and reliability. Testing is done by laser light scattering, except for the standards below 1,000Da, which are tested by size exclusion chromatography.

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Polystyrene calibration standards

P/N Description Nominal MW (Da) Amount Price ($) 05202 A-300 400 10g 346 05203 A-500 530 10g 346 05204 A-1000 950 10g 346 05205 A-2500 2800 5g 182 05206 A-5000 6200 5g 182 05207 F-1 10,000 5g 182 05208 F-2 17,000 5g 182 05209 F-4 44,000 5g 182 05210 F-10 100,000 5g 182 05211 F-20 190,000 5g 182 05212 F-40 420,000 5g 182 05213 F-80 800,000 5g 182 05214 F-128 1,300,000 1g 86 05215 F-288 2,900,000 1g 86 05216 F-380 3,800,000 1g 86 05217 F-450 4,500,000 1g 166 05218 F-550 5,500,000 1g 224 05219 F-700 6,800,000 1g 224 05220 F-850 8,400,000 1g 224 05221 F-2000 21,000,000 1g 453 06476 Polystyrene Oligomer Kit, A-500 thru F-128 12x1g 666 06477 High MW Kit F-10 thru F-2000 12x1g 1,461

Polyethylene oxide calibration standards

P/N Description Nominal MW (Da) Amount Price ($) 06211 SE-2 18,000 0.5g 97 06212 SE-5 39,000 0.5g 97 06213 SE-8 86,000 0.5g 97 06214 SE-15 150,000 0.5g 97 06215 SE-30 250,000 0.5g 97 06216 SE-70 590,000 0.5g 97 06217 SE-150 1,000,000 0.5g 97 05773 Polyethylene oxide (PEO) Kit, SE-2 thru SE-150 7x0.2g 279

The molecular weights for the above listed polystyrene and polyethylene oxide calibration standards are determined by laser light scattering, except for polystyrene standards A-300, A-500 and A-1000 which are based on size exclusion chromatography. Results vary among individual lots.