•Add 1.839 g Sodium orthovanadate to a screw cap tube (falcon) •Make up to 8ml with distilled water. •Adjust pH to 10 •If solution is yellow, place in boiling water until clear. Re-check pH and repeat as necessary. •Adjust to final concentration by checking A265 nm, ext. coeff.= 2925M-1cm-1and adding distilled water as needed.
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1-4mL Autosampler Vials for HPLC, UPLC, GC 1.5mL 8-425 Screw Neck Vial ND8 1.5mL 9mm Short Thread Vial ND9 1.5mL 10-425 Screw Neck Vial ND10 1.5mL 11mm Snap Ring Vial ND11 1.5mL 11mm Crimp Ring Vial ND11 4mL 13-425 Screw Neck Vial ND13 1mL Shell Vial Micro-Inserts Vial Racks Hand Crimper, Decrimper
9mm screw thread caps, septa, and vials are designed especially for use with Aijiren's and other rotating or robotic arm samplers 2ml, 12X32mm vials are manufactured of Clear type 1 Class A or Amber, Type 1 Class B borosilicate glass and include a write-in patch for sample identification
Dear HPLC experts, we currently have rather huge problems with our autosampler - it does not constantly inject the right volume (which is crucial for quantitative analysis).
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flat bottom for security with inserts I-D™ vials feature write-on patch with graduations at 0.5, 1.0 and 1.5mL Glastic vial features a glass insert pre-inserted inside of a clear TPX vial Standard opening screw thread glass vials have a capacity of 2 mL and measure 12 x 32 mm.
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Autosampler Vials, Caps, and Closures Thermo Scientific™ 20 mm Headspace Glass Vials Headspace vials are available in clear or amber glass with a round or flat base, a crimp seal with a beveled or square edge finish, or with a screw-thread finish.
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27261-U: Assembled screw cap with hole with PTFE/silicone septum black polypropylene hole cap, thread for 8-425, PTFE/silicone, Top Hat (septa and closure designed to fit together tightly), for use with 2 mL vial, 4.6 mm opening, pkg of 100 ea
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Then, I have found that 0.1 M sodium phosphate buffer (pH 2.0) is the best to give reproducibility (please see files; Lysozyme by RP-HPLC, PTH Roma RP-HPLC, and HPLC-Surf-SEC protein determination
