Technical know-how, product news and QEMIX activities together with our scientific partners.
NewsHPC Standards GmbH is a DAkkS-accredited ISO 17034 reference material producer in Germany. Accreditation scope, catalogue and isotope-labelled internal standards at QEMIX.
NewsEPA 1633A determines 40 PFAS across 8 matrices by LC-MS/MS with isotope dilution, plus 24 extracted and 7 non-extracted internal standards. The full Dr. Ehrenstorfer catalogue for the method, with availability at QEMIX.
NewsLGC keeps the original brand name and catalogue code of every reference standard maker it acquired. A brand-by-brand guide: speciality, manufacturing site, accreditation, how to read the codes, and example codes held by QEMIX.
NewsShimadzu developed an LC-MS/MS method for the simultaneous quantitation of 32 PFAS in infant formula, using Dr. Ehrenstorfer reference standards during method development and evaluation. Key facts MatrixInfant formula Analytes32…
BrandsMerck has moved Titrisol® Concentrates from ampoules to small HDPE bottles, cutting packaging material and simplifying how the solution is prepared.Key factsManufacturerMerck · SupelcoFormer packagingPE ampouleNew packagingHDPE bottleBottle sizes100 mL…
BrandsAuthorized distributor, lot-specific COA, SDS, Product No. versus CAS, GR and Extra Pure grades, minimum order, delivery, shelf life and storage rules.Key factsOriginSouth KoreaFounded1970Purity gradesGR · EP · CPCatalogueAnalytical reagents…
BrandsWhich DUKSAN chemical fits which step: phosphate buffers for HPLC, acid and base for Kjeldahl, hexane for fat extraction, and the grade each test needs.Key factsOriginSouth KoreaFounded1970Purity gradesGR · EP…
BrandsReading DUKSAN labels, Specifications, lot-specific COAs and the 16 SDS sections: Product No., CAS, lot number, UN number and GHS, plus a goods-in check.Key factsOriginSouth KoreaFounded1970Purity gradesGR · EP ·…
BrandsLook-up table of 50 DUKSAN items at QEMIX: Product No., CAS number, GR/Extra Pure/HPLC grade, assay and pack size, checked against the duksan.kr catalogue.Key factsOriginSouth KoreaFounded1970Purity gradesGR · EP ·…
BrandsQEMIX is the Authorized Distributor of DUKSAN Pure Chemicals in Vietnam: direct import from Korea, lot-specific COA/SDS, local stock, quick quotes.Key factsOriginSouth KoreaFounded1970Purity gradesGR · EP · CPCatalogueAnalytical reagents ·…
BrandsDUKSAN Pure Chemicals: Korean reagent maker since 1970, over 2,000 products. GR/EP/CP grades, six solvent grades, Product No., COA and SDS at QEMIX.Key factsOriginSouth KoreaFounded1970Purity gradesGR · EP · CPCatalogueAnalytical…
NewsChemicals, solvents, reference standards, consumables and instruments across the whole pharmaceutical workflow, from incoming materials to finished-product release.
HPLC & ChromatographyIn HPLC the solvent affects baseline stability, retention time, resolution and column life. How to pick the right grade, and when acetonitrile beats methanol.
BrandsMore than 350 years of history, three business areas and a catalogue spanning chemicals, analytical solvents, reference standards, microbiology and purified water.
Reference Standards & CRMTwo of the reference-standard brands most widely relied on by laboratories: what each catalogue covers, when to use a CRM, and how to store standards properly.
Food TestingThe highest-risk product categories, the four most common forms of fraud, the analytical techniques that detect them, and what a prevention programme needs.
Chemical SafetySolvent vapour can ignite, cause exposure by inhalation and build pressure inside packaging. Storage principles, safe handling, spill response and an inspection checklist.
Sample PreparationA great deal of analytical error arises before the instrument ever sees the sample. Common contamination routes, control samples, and when to review your procedure.
ChemicalsFrom mild reagents such as NaBH4 to powerful systems such as LiAlH4, the Birch reduction and the Clemmensen reduction: how they work, where they are used, and how to handle them safely.
HPLC & ChromatographyWater is the main component of most reversed-phase mobile phases, and one of the most common sources of ghost peaks, rising backpressure and poor repeatability.
InventoryDuplicate purchases, expired stock and lost lot traceability all come from weak inventory control. How to zone a chemical store and what the label must carry.
ChemicalsThe same chemical name covers several purity grades. What each grade is for, and a quick guide to matching the grade to your method.
Reference Standards & CRMChoosing the wrong standard can bias a result even when the instrument and technique are sound. Selection criteria, storage rules and the mistakes to avoid.
Chemical SafetyThe safety data sheet is mandatory reading before a chemical is received, stored or used. The sections that matter most, and a quick pre-use checklist.