Merck Drug discovery > Pre-Clinical Development Products & Reviews

• Concentrates 500 µL down to 15 µL• Concentration factor 25 x to 30 x• High sample recovery (greater than 90% of dilute starting solution)• Fast processing time - 10 to 30 minutes• Consistent recoveries thanks to the reverse spin capability• Reverse spin capability provides consistent recoveries

The Guava® Caspase 3/7 and 8 Assays employ a FLICA (Fluorescent Labeled Inhibitor of Caspases) reagent that specifically identifies active caspase 3 and 7 molecules or caspase 8 molecules. Non-cytotoxic, cell permeant dyes elimiate lysis and permeabilization procedures. Each FLICA is comprised of three subunits: A caspase-specific amino acid inhibitor containing a recognition sequence for caspase 3/7 (DEVD) or caspase 8 (LETD)…

Steripak-GP filter units are designed for larger scale pressure-driven filtration of tissue culture media with or without serum. They are single use and are not autoclavable. The filter units come in two sizes, with the smaller unit able to filter up to 10 L and the larger up to 20 L. Both sizes utilize the low protein binding, fast flow 0.22 µm EMD Millipore Express membrane.

Steritop bottle top filter units provide a large filter area for rapid sterile filtration of aqueous fluids into narrow-mouth (33 mm) or wide-mouth (45 mm) bottles. A small tab inside the funnel secures an optional prefilter in-place during filtration. For added protection against contamination, the threads for bottle attachment have been slightly recessed in case the funnel accidentally touches a work surface

33 mm diameter sterile syringe filters.

Upgrade your tissue culture room by getting accurate cell counts quickly, and recording results digitally. The Scepter™ 3.0 handheld cell counter combines smart capabilities with the Coulter impedance principal to hand you precise, consistent counts in seconds.

Proteinase K from Tritirachium album ELEVATE  

Proteinase K from Tritirachium album ELEVATE

lyophilized powder, ≥3 TIU/mg solid

Suitable for plant cell culture, BioReagent, ≥95% (HPLC)

Suitable for cell culture, suitable for insect cell culture, ≥98.0%

suitable for cell culture

Type VI-S, lyophilized powder, for diagnostic assay manufacturing

4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid

≥99.5% (titration), crystalline powder

lyophilized powder, 250 units/mg solid (using pyrogallol)

Lyophilized powder, ≥4000 units/mg protein (biuret), Chromatographically purified

lyophilized powder, ≥2000 units/mg protein

Phytohemagglutinin PHA-P, lyophilized powder

Type I-S, 65-85% protein (≥75% of protein is clottable)

saline solution, 3-7 TIU/mg protein

≥99.5% (titration)

Powder, pH 7.4, with 0.05% Tween® 20

lyophilized powder, ≥900 units/mg protein

1,6-α-D-Glucan 6-glucanohydrolase