Bis-Sulfone-PEG9-DBCO is a bis-alkylating labeling reagent that is selective for the cysteine sulfur atoms from a native disulfide. These reagents undergo bis-alkylation to conjugate both thiols derived from the two cysteine residues of a reduced native disulfide bond such as the interchain disulfide bonds of an antibody. The reaction results in covalent rebridging of the disulfide bond via a three carbon bridge leaving the protein structurally intact. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Detail
Bis-Sulfone-PEG9-DBCO is a bis-alkylating labeling reagent that is selective for the cysteine sulfur atoms from a native disulfide. These reagents undergo bis-alkylation to conjugate both thiols derived from the two cysteine residues of a reduced native disulfide bond such as the interchain disulfide bonds of an antibody. The reaction results in covalent rebridging of the disulfide bond via a three carbon bridge leaving the protein structurally intact. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
The Benzoic Acid Detection Kit provides a rapid, simple, sensitive, and reliable test suitable for screening of Benzoic Acid concentration.
Benzoic Acid is a white solid that is an extensively used preservative. Although this preservative prevents or delays nutritional losses due to microbiological, enzymatic or chemical changes of foods during its shelf life there is a suspicion that small amounts of benzene may be formed from benzoic acid in nonalcoholic beverages in the presence of ascorbic acid. Benzoic acid and ascorbic acid are food additives which must be declared on the food. Benzoic acid or E 210 is a preservative which also occurs naturally, for instance, in cranberries. A maximum amount of 150 mg/l benzoic acid may be added to non-alcoholic flavored beverages.
Document
Highly Sensitive Assay to Screen for Benzoic Acid
Visual Readout (sample dependent: milk, red/pink)
Detection range of 1ppm to 1500ppm
Tube or Plate based options available
Compatible with the Nix Sensor or plate readers to obtain quantitative results.
The Flex caddy allows the Heater-Shaker GEN1 to be installed on the Opentrons Flex deck and sit below the deck, enabling below-deck cable routing and labware placed on top of modules to remain closer to the deck surface. The calibration adapter is used to calibrate the location of the Heater-Shaker. Caddies and calibration adapters are specific to the type of module.
Note: This item does not include the Heater-Shaker. The module is available with or without the Flex Caddy and Calibration tool: Heater-Shaker Module GEN1
Document
The Flex caddy allows the Heater-Shaker GEN1 to be installed on the Opentrons Flex deck and sit below the deck, enabling below-deck cable routing and labware placed on top of modules to remain closer to the deck surface. The calibration adapter is used to calibrate the location of the Heater-Shaker. Caddies and calibration adapters are specific to the type of module.
Note: This item does not include the Heater-Shaker. The module is available with or without the Flex Caddy and Calibration tool: Heater-Shaker Module GEN1
Compatible with most DNA and RNA isolation methods
Norgen’s Total Nucleic Acid Preservation Tubes Dx are designed for ambient preservation and transport of total nucleic acids (DNA and RNA) from samples collected using a swab. The Total Nucleic Acid Preservation Tubes contain Norgen’s Total Nucleic Acid Preservative in a liquid format. The user simply collects the specimen using a sterile nylon flocked swab (not provided), and then transfers the swab into the Total Nucleic Acid Preservative. The Preservative prevents the growth of Gram-negative and Gram- positive bacteria and fungi, and also inactivates viruses allowing the resulting non-infectious samples to be handled and shipped safely. In addition, the Total Nucleic Acid Preservative eliminates the need to immediately process or freeze samples and allows the samples to be shipped to centralized testing facilities at ambient temperatures. The components of the preservative allow DNA samples to be stored at room temperature for over 4 months and RNA samples to be stored at room temperature for over 2 months. This kit is ideal for collecting and preserving nasal and oral swab samples for in vitro diagnostic use for medical purposes. This kit can be used to preserve viral RNA, including SARs-CoV-2 RNA for detection of COVID-19.
Norgen’s Total Nucleic Acid Preservation Tubes Dx are intended for use by professional users such as technicians, physicians and biologists experienced and trained in molecular biological techniques.
Norgen’s Total Nucleic Acid Preservation Tubes Dx do not provide a diagnostic result. It is the sole responsibility of the user to use and validate these devices in conjunction with a downstream in vitro diagnostic assay.
Shelf Life and HandlingThe tubes should be kept tightly sealed and stored at room temperature for up to 1 year without any reduction in performance (The collection due date is written on the device label and the kit box label).Once collected, RNA is stable for up to 2 months and DNA is stable for up to 4 months when the tubes are kept tightly sealed and stored at room temperature.
