"EUPROMOCLEARANCECHEM00001"

Supplier: Merck

Used to increase lens effectiveness

Supplier: VWR Chemicals

The volumetric and coulometric reagents are buffered systems, stabilised around the ideal value between 5 to 7 ensuring a rapid and stoichiometric course of reaction. Buffering systems which neutralise and stabilise the pH during the reaction are suitable for this purpose.

Supplier: Merck

Ammonium iron(II) sulphate hexahydrate, EMSURE® for analysis, Supelco®

Supplier: Avantor

EDTA disodium salt dihydrate, BAKER ANALYZED®, Laboratory Reagent, J.T.Baker®

Supplier: Merck

Anaerocult® system is a reliable and established system for the cultivation of obligate and facultative anaerobes. The Anaerocult® system is based on sachets made of highly absorptive and highly gas permeable paper. The sachets, of different sizes, are filled with an oxygen-binding reagent mixture which also produces carbon dioxide. Water is added to start the reaction, which consists of the oxidation of finely divided iron and release of CO₂. The reaction proceeds without a catalyst. Incubation is possible in an anaerobic jar or in bags.

Supplier: Merck

LiChrospher® is Merck's reliable and versatile, traditionally-produced, spherical silica. LiChrospher® is available with different modifications.

Supplier: Merck

Titriplex® III ISO, ACS, Reag. Ph. Eur. analytical reagent, Supelco®

Supplier: Merck

EXtrelut® NT is a specially processed, inert, wide pore kieselguhr with a high pore volume. It has been used for quite some time within research, for the sample preparation of urine, whole blood, plasma and other biological matrices. Other applications include environmental and residue testing such as analysis of industrial, domestic and wastewater. EXtrelut® NT is supplied either pre-packed in cartridges or as a loose sorbent. EXtrelut® NT simplifies liquid-liquid extraction by replacing separation funnels. Using a single step is more efficient, saves solvent, as well as material and time, in contrast to classic funnel separation. The aqueous sample is simply applied to the EXtrelut® NT sorbent. It distributes itself over the chemically-inert matrix so acting as a stationary phase. Subsequently, elution takes place using organic solvents that are non miscible with water. All the lipophilic substances are extracted from the aqueous into the organic phase.

Supplier: Merck

Fast method development of complex samples across the pH range from 1,5 to 10,5 with different mobile phases and temperature conditions.
Purospher® STAR RP-18 endcapped HPLC columns are designed for universal use. Basic, neutral and metal-chelating compounds can easily be separated with simple mobile phases – naturally without peak tailing. Thanks to its outstanding performance and stability, Purospher® STAR RP-18 endcapped offers maximum flexibility in method development. Robust methods can be developed over the entire pH range from 1,5 to 10,5. High pH-stability allows the separation of strongly basic compounds with alkaline eluents. The combination of high purity silica, best all-round retention characteristics, outstanding pH stability up to pH 10,5, and suitability for up to 100% aqueous mobile phases, make Purospher® STAR RP-18 endcapped an all-round top performance column, almost universal in its range of applications.

Supplier: Merck

Monolithic silica technology: A new age in chromatography. Chromolith® columns are based on silica so existing methods can be easily transferred with only minimal investment in new method development work. 'Sol-Gel' technology allows highly porous monolithic rods of silica to be formed. These feature a bimodal pore structure provides a unique combination of macropores and mesopores.

Supplier: Merck

L(+)-Potassium sodium tartrate tetrahydrate, EMSURE® ISO, ACS, Reag. Ph. Eur. for analysis, Supelco®