Propargyl-PEG4-methylamine is a PEG linker that can be react with azide compounds in copper catalyzed azide-alkyne Click Chemistry reactions. The methylamine group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The PEG spacer increases hydrophilicity of the linker in aqueous environment. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Propargyl-PEG4-methylamine is a PEG linker that can be react with azide compounds in copper catalyzed azide-alkyne Click Chemistry reactions. The methylamine group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The PEG spacer increases hydrophilicity of the linker in aqueous environment. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Norgen’s Saliva DNA Collection and Preservation Devices are designed for 1) simple and non-invasive saliva collection and 2) preservation of DNA in saliva samples at ambient temperature. Each of the 50 Saliva DNA Collection and Preservation Devices consists of 3 components: (1) Saliva Collection Funnel and Collection Tube, (2) Collection Tube Cap, and (3) Norgen’s Saliva DNA Preservative contained within a sealed squeezable ampoule. Saliva samples are collected by spitting inside the Collection Funnel which has been assembled with the Collection Tube. After collecting the required volume of saliva the Collection Funnel is removed and the contents of the Preservative Ampoule are then added and mixed with the collected saliva. The Saliva Collection Tube is subsequently sent to the laboratory for DNA isolation and analysis. DNA can be isolated from the preserved saliva samples using Norgen’s Saliva DNA Isolation Kit (Cat# Dx45400). Each of Norgen’s Collection Tubes is labeled with a unique serial number that can be used for secure and anonymous tracking of the sample. The saliva DNA in preserved samples is stable for more than 2 years at room temperature. This kit is ideal for collecting and preserving DNA samples for in vitro diagnostic use for medical purposes.
Norgen’s Saliva DNA Preservative is an aqueous storage buffer designed for rapid cellular lysis and subsequent preservation of DNA from fresh specimens. The buffer 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 buffer eliminates the need to immediately process or freeze samples and allows the samples to be shipped to centralized testing facilities at ambient temperature. The components of the buffer allow samples to be stored for more than 2 years without any detectable DNA degradation.
Prior to saliva DNA isolation, vortex the Collection Tube containing preserved saliva for 10 seconds and incubate at 55°C for one hour. Saliva DNA can now be isolated from the preserved saliva samples using Norgen’s spin-column based Saliva DNA Isolation Kit Dx (Cat# Dx45400) or other commercially available methods that have been validated for use with Norgen’s Saliva DNA Collection and Preservation Devices.
NOTE: This product is not available for sale in the United States.
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| Kit Specifications | |
| Volume of Saliva Collected | 2 mL |
| Volume of Saliva-Preservative Mix | 4 mL |
| Preservation Temperature | Room Temperature |
| Preservation time | Over 2 years at room temperature |
Shelf Life and Handling
| Kit Components | Cat. 49000 (50 Devices) |
|---|---|
| Individual Saliva DNA Collection and Preservation Devices | 50 |
| Donor Procedure Flowchart | 1 |
| Product Insert | 1 |
| Individual Saliva DNA Collection and Preservation Device Contents | |
| Saliva Collection Funnel and Collection Tube | 1 |
| Collection Tube Cap | 1 |
| Preservative Ampoule | 1 |
| Donor Instructions | 1 |
* Optical system: equipped with infinite flat field optical system, the whole machine mildew prevention design and large field eyepiece, with beautiful appearance, clear imaging, broad vision, convenient operation and other characteristics, can be widely used in biology, medicine, industry, agriculture and other fields, is the ideal instrument for medical, teaching, scientific research and other units
* Observation head device: the cylinder can rotate 360 degrees, the displacement of the center of the mirror is 0.06mm; 30 tilt; the hinge type binocular observation (the magnification difference between left and right systems is 2.0%; the end position difference is 0.1mm at zero vision) and the third party connection port, the pupil distance adjustment range is 50-75mm, the fixed observation cylinder head is internal hexagon screw or select portable screw.
* Eyepiece configuration: random eyepiece WF10X / 22mm; the magnification accuracy of eyepiece shall not exceed ± 2%. There is a card slot on the eyepiece tube to lock the eyepiece to prevent falling. Binocular vision is adjustable, making binocular observation easier;
* Objective: Broadband coated ED-N195 pure copper infinite remote flat field achromatic objective; objective magnification accuracy not exceeding ± 5%; 4X, 10X, 40X (spring), 100X (spring, oil); objective error 10-40 Aim 0.06mm; 40-100 Aim 0.03mm
* Loading platform: triangular rail XY composite mechanical moving loading platform; 0.005 lateral to 5N horizontal force, corrosion resistance and wear resistance. Rectangular, size 190X140mm, stroke 6090mm, minimum read value 0.1 mm.
Parameter of microscope
| Specification configuration | TL36A | Binocular observation head, 45° tilt, 360 degrees can be rotated, pupil distance can be adjusted, adjustment range 50-75mm |
| TL36B | Three-eye observation head, 45° tilt, 360 degrees can be rotated, pupil distance can be adjusted, adjustment range 50-75mm. | |
| TL36M | Three-eye viewing head with 6.3 megapixel imaging system CMOS camera | |
| TL36P | Three-eye viewing head, equipped with 10.1 inch integrated flat panel display | |
| Eyepiece | Wide-angle eyepiece WF10X,field of view 22mm,optional WF16X,WF25X | |
| Converter | Quadruple Revolving converter | |
| 0bjective | Flat field achromatic objective at infinite distance,4X,10X,40X,100X(oil) | |
| Condenser | ABBE N.A.1.25Condenser with Iris Diaphragm &Filter | |
| Stage | Double Layer Mechanical Stage, Size1190X140mm, Moving Range : 60mmx90mm | |
| Focusing | 0.02mmCrude motion, micromotion and coaxial focal adjustment system with a minimum focal range of 0.02mm Coarse and Fine Focusing | |
| Light source | 3W LED,with Rechargeable Battery,Type C USB cable | |
| Attachments | Dust bag,Type C power cord | |
TL 36 series biological microscopes are equipped with infinite distance flat field achromatic objective and large field eyepiece, with the characteristics of beautiful appearance, clear imaging, broad vision, convenient operation and so on, can be widely used in biology, medicine, industry, agriculture and other fields, is the ideal instrument for medical, teaching, scientific research and other units
Propargyl-PEG3-acid is a reagent with an alkyne group and a carboxylic acid. The terminal carboxylic acid can form amide bond with primary amines (activation is needed). The alkyne can form triazole linkage with azide containing molecules via copper catalyzed reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Propargyl-PEG3-acid is a reagent with an alkyne group and a carboxylic acid. The terminal carboxylic acid can form amide bond with primary amines (activation is needed). The alkyne can form triazole linkage with azide containing molecules via copper catalyzed reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
