- by /u/Which_Lifeguard_864Our analytical balance has readability up to 0.1 mg, and I’m wondering if a 500 mg F1 weight is sufficient or if we should move to E2 class weights for better calibration accuracy. https://preview.redd.it/c6wrm0m648ng1.jpg?width=367&format=pjpg&auto=webp&s=e5309289fc74936a85a2c9ca31629eed2edd612f submitted by /u/Which_Lifeguard_864 [link] [comments]
- by /u/Standard_Hornet8596Like do you have lab equipment? I will pay around 300 submitted by /u/Standard_Hornet8596 [link] [comments]
- by /u/Firm-Distribution731submitted by /u/Firm-Distribution731 [link] [comments]
- by /u/Apacukafundaluka12Hi, I have a simple question about the preconcentration factor (PF) in extraction methods. I see it calculated in different ways .. sometimes from volume ratios, sometimes from concentrations, and sometimes from calibration slopes. What is the correct way to calculate it? Is the volume ratio enough, or should it be based on experimental data? Thanks in advance! submitted by /u/Apacukafundaluka12 [link] [comments]
- by /u/No_Combination_1211submitted by /u/No_Combination_1211 [link] [comments]
- by /u/Over-Big-8224submitted by /u/Over-Big-8224 [link] [comments]
- by /u/phyto_dexsubmitted by /u/phyto_dex [link] [comments]
- by /u/Intelligent_Bench734Hey everyone! I wanted to ask if anyone here has experience with the MassChrom Amino Acid Analysis (Chromsystems) kit. We’ve been running it for quantitative amino acid analysis, but I’m hitting serious problems with the HPLC part. According to the manual, the column can be stored in Phase A for up to 3 days – but in my case, that seems totally untrue. After that kind of storage, my peaks become badly broadened (stretched by up to 1 min), and the column can’t be restored to its original performance. Even after flushing with Phase B, I couldn’t get it back […]
- by /u/Which_Lifeguard_864For those using circulating water baths regularly — how close do they stay to the set temperature over long runs? Any issues with temperature fluctuation or uneven heating? Trying to understand what to realistically expect. submitted by /u/Which_Lifeguard_864 [link] [comments]
- by /u/Apacukafundaluka12submitted by /u/Apacukafundaluka12 [link] [comments]
- by /u/Clear-Emu-347submitted by /u/Clear-Emu-347 [link] [comments]
- by /u/Apacukafundaluka12Hi, Does anyone have experience with the WPA Lightwave II+ UV-Vis spectrophotometer? I am measuring full absorption spectra (e.g. 400–700 nm) and I would like to export the complete spectrum data (λ vs absorbance). Is it possible to save or export the spectrum directly from the instrument (e.g. via USB or software), or does it need to be transferred to a computer in a specific way? If export is not available, what is the recommended way to properly record the spectrum for publication purposes? Thanks in advance! submitted by /u/Apacukafundaluka12 [link] [comments]
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