500g/bottle; 10kg/bag
Usages:
Yeast extract is made from yeast, used in microbiological culture media as a source of nitrogen and B vitamins.
Technical specification:
Total nitrogen(TN)—————————≥10.0%
Amino nitrogen(AN) ————————≥4.0%
Moisture—————————————≤5.0%
Ash———————————————≤10.0%
Clˉ——————————————–＜2.0%
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light.
Specifications: 500g/bottle; 10kg/bag
Usages:
For isolation and enumeration of coagulase-positive staphylococci in foodstuffs.
Principle:
Tryptone, beef extract powder and yeast extract powder provides carbon and nitrogen sources, vitamins and growth factors; sodium pyruvate and glycine to stimulate the growth of Staphylococcus aureus; lithium chloride and potassium tellurite inhibit the non-staphylococcal microorganisms; containing lecithinase staphylococcal colonies produce degradation yolk make transparent circle, while the role of the lipase produced an opaque precipitate ring; coagulase-positive staphylococci can restore potassium tellurite and produce black colonies; agar is medium coagulant.
Formulation（per liter）:
Pancreatic Digest of Casein 10g
Beef Extract 5g
Yeast Extract 1g
Sodium Pyruvate 10g
Glycine 12g
Lithium Chloride 5g
Agar 20g
Final pH7.0 ± 0.2
How to use：
1.Suspend 63g in 950ML of distilled water , stirring heated to boiling ,autoclave at 121℃ for 15 minutes.
2.Diluted and treated samples.
Quality control：
| Item | The name and number of strain | Growth | Colony Color |
| 1 | Staphylococcus aureus ATCC6538 | Good | black |
| 2 | Staphylococcus epidermidis CMCC (B) 26069 | Good | Green-blue |
| 3 | Escherichia coli ATCC25922 | Not growth | — |
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.
Specifications: 250g/bottle
*Supplement: 029190 Egg Yolk Tellurite Emulsion
250g
The kit includes HS Dye, HS Dilution Buffer, and two DNA Standards. The assay is accurate for DNA concentrations from 10 pg/µL to 100 ng/µL, and is highly selective for double-stranded DNA over RNA.
Features
DNA selectivity and sensitivity of the HS kit. A series of input DNA (20, 40, 60, 80, 100, and 120 ng) was used with or without the contamination of RNA.
Comparison of dsDNA HS kits. The performance of the BioDynami dsDNA HS kit is nearly identical to that of Thermo Fisher’s Qubit dsDNA HS kit.
Cat.# 40042 dsDNA Quantification HS Kit, 100 assays and 500 assays
GL20 Technical Parameter：
| Max. Speed | 21000rpm |
| Max. RCF | 30910×g |
| Max. Capacity | 4×800ml |
| Time Range | 1~9h59min |
| RPM/RCF Convert | Yes |
| Noise (dB) | ≤ 60 |
| Temperature | -20℃~40℃ |
| Acc/Dec | 10 Kinds |
| Speed Accuracy | ±20r/min |
| Temperature Accuracy | ±1℃ |
| Voltage(V/Hz) | AC 220V/110V 50HZ/60HZ |
| Size (W x D x Hmm) | 680×540×830mm |
| Net Weight(Kg) | 170KG |
| Certificates | CE,ISO & Calibration report are available |
Matched Rotors for GL20
| Order No | Rotor | Rotor Max Speed(r/min) | Volume(ml) | RCF(×g) |
| G20-1 | Swing Rotor | 4000 | 4×800ml | 3450 |
| G20-2 | Microplate rotor | 4000 | 4×4×96 well | 2940 |
| G20-3 | Microplate rotor | 4000 | 2×4×96 well | 3210 |
| G20-4 | Microplate rotor | 4000 | 2×3×48 well | 2300 |
| G20-5 | Swing rotor | 4000 | 4×40×7ml vacuum tube | 3270 |
| G20-6 | 4000 | 4×40×5ml vacuum tube | 2890 | |
| G20-7 | 4000 | 4×28×10ml vacuum tube | 3130 | |
| G20-8 | Swing Rotor | 4000 | Fat bottle | 3830 |
| G20-9 | Fixed Rotor | 16000 | 4×8PCR | 15760 |
| G20-10 | Fixed Rotor | 15000 | 6×8PCR | 21420 |
| G20-11 | Fixed Rotor | 16000 | 8×8PCR | 17480 |
| G20-12 | Fixed Rotor | 15000 | 12×8PCR | 22930 |
| G20-13 | Fixed Rotor | 15000 | 40×0.5ml | 22920 |
| G20-14 | Fixed Rotor | 21000 | 12×1.5ml | 30910 |
| G20-15 | Fixed Rotor | 16000 | 24×1.5ml | 23440 |
| G20-16 | Fixed Rotor | 14000 | 30×1.5ml | 20800 |
| G20-17 | Fixed Rotor | 13000 | 48×1.5ml | 17930 |
| G20-18 | Fixed Rotor | 16000 | 16×5ml | 22020 |
| G20-19 | Fixed Rotor | 16000 | 6×10ml | 21500 |
| G20-20 | Fixed Rotor | 15000 | 12×10ml | 22680 |
| G20-21 | Fixed Rotor | 13000 | 16×10ml | 19490 |
| G20-22 | Fixed Rotor | 13000 | 8×15ml | 17790 |
| G20-23 | Fixed Rotor | 11000 | 12×15ml | 14330 |
| G20-24 | Fixed Rotor | 5000 | 24×15ml | 3500 |
| G20-25 | Fixed Rotor | 5000 | 30×15ml | 3830 |
| G20-26 | Fixed Rotor | 14000 | 6×30ml | 19060 |
| G20-27 | Fixed Rotor | 13000 | 6×50ml(conical) | 18840 |
| G20-28 | Fixed Rotor | 13000 | 6×50ml(round) | 18730 |
| G20-29 | Fixed Rotor | 5000 | 12×50ml | 3860 |
| G20-30 | Fixed Rotor | 4000 | 24×50ml | 2970 |
| G20-31 | Fixed Rotor | 13000 | 4×85ml | 18940 |
| G20-32 | Fixed Rotor | 12000 | 4×100ml | 14850 |
| G20-33 | Fixed Rotor | 10000 | 6×100ml | 11380 |
| G20-34 | Fixed Rotor | 4000 | 12×100ml | 2970 |
| G20-35 | Fixed Rotor | 12000 | 24 capillaries | 15800 |
| G20-36 | Swing Rotor | 15000 | 4×5ml | 19920 |
| G20-37 | Vertical rotor | 16000 | 16×5ml | 16450 |
| G20-38 | Vertical rotor | 14000 | 8×30ml | 19750 |
Features
1. Brushless frequency motor, in great torque, free maintenance, no powder pollution, quick in speed up and down.
2.Imported compressors fluorine free,double cycle cooling, cold and hot alternating easily, free environment pollution and precise in temperature control
3.Microprocessor control, digital display which indicates the temperature, speed, time, RCF in operation, speed raising and reducing quickly, operate simply. Running parameter can be edited.
4. 10 kinds of program stored in the memory, 10 kinds of accelerating and decelerating speed for your choice.
5. Automatically electric lid lock, over speed, over temperature protection and imbalance protection.
6.High quality steel centrifuge body , stainless steel chamber, built-in stainless steel explosion-proof protect inner sleeve , 3 tiers protection,safe and reliable.
7. Rotor is connected to spindle by specialized taper sleeve, loading simple and quick, no direction.
