N-(Boc-PEG3)-N-bis-(PEG3-Amino-Tri-(Propargyl-PEG2-ethoxymethyl)-methane) is a crosslinker consisting of six propargyl groups and a t-Boc protected aminooxy group. The propargyl groups can form triazole linkage with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry. The protected amine can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research use only.
N-(Boc-PEG3)-N-bis-(PEG3-Amino-Tri-(Propargyl-PEG2-ethoxymethyl)-methane) is a crosslinker consisting of six propargyl groups and a t-Boc protected aminooxy group. The propargyl groups can form triazole linkage with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry. The protected amine can be deprotected under acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research use only.
TD5B Large Capacity Low Speed Centrifuge
Features:
1. Brushless motor with simpler construction, more reliable performance, longer life and quietly running.
2. Automatically electric lid lock, super speed, over temperature protection and imbalance protection. The centrifuge body is made of high quality steel, safe and reliable.
3. Rotor is connected to spindle by specialized taper sleeve, loading simple and quick, no direction, safe and reliable.
4. Microprocessor control, TD5B with digital display which indicate the speed, time, RCF in operation, speed raising and reducing quick, operate simply.
5.10 kinds of accelerating and decelerating speed for your choice.
TD5B Technical Parameter：
| Max. Speed | 5000rpm |
| Max. RCF | 4730×g |
| Max. Capacity | 4×800ml |
| Time Range | 0~99min |
| RPM/RCF Convert | Yes |
| Noise (dB) | ≤ 58 |
| Temperature | Normal |
| Acc/Dec | 10 Kinds |
| Speed Accuracy | ±20r/min |
| Temperature Accuracy | / |
| Voltage(V/Hz) | AC 220V/110V 50HZ/60HZ |
| Size (W x D x Hmm) | 685×500×385mm |
| Net Weight(Kg) | 67KG |
| Certificates | CE,ISO & Calibration report are available |
Matched Rotors for TD5B
| Order No | Rotor | Max Speed(r/min) | Volume(ml) | Max RCF(×g) |
| 5B-1 | Swing Rotor | 4000 | 4×800ml | 3450 |
| 5B-2 | Swing Rotor | 4000 | 4×750ml | 3530 |
| 5B-3 | Swing Rotor | 4000 | 4×500ml | 3380 |
| 5B-4 | Swing Rotor | 4000 | 4×4×96(well) | 2940 |
| 5B-5 | Microplate rotor | 4000 | 2×4×96(well) | 3210 |
| 5B-6 | 2×3×48(well) | 2300 | ||
| 5B-7 | Swing rotor | 5000 | 4×1×50ml | 4730 |
| 4×1×100ml | 4730 | |||
| 4000 | 4×2×100ml | 3020 | ||
| 4000 | 4×2×50ml | 3200 | ||
| 4000 | 4×4×15ml | 3200 | ||
| 4000 | 4×6×15ml | 3200 | ||
| 5B-8 | Swing rotor | 4000 | 4×8×15ml | 3200 |
| 4000 | 4×12×5ml vacuum tube | 2480 | ||
| 4000 | 4×12×7ml vacuum tube | 2760 | ||
| 4000 | 4×12×10ml vacuum tube | 2880 | ||
| 4000 | 4×8×10/7/5ml vacuum tube | 2790 | ||
| 4000 | 4×6×10/7/5ml vacuum tube | 2790 | ||
| 4000 | 4×4×10/7/5ml vacuum tube | 2790 | ||
| 5B-9 | Swing rotor | 4000 | 4×24×5ml vacuum tube | 2480 |
| 4000 | 4×31×5ml Khan tubes | 2480 | ||
| 5B-10 | Swing rotor | 4000 | 4×24×7ml vacuum tube | 3140 |
| 4000 | 4×31×7ml Khan tubes | 3140 | ||
| 4000 | 4×30×7ml vacuum tube | 3140 | ||
| 4000 | 4×30×5ml vacuum tube | 3140 | ||
| 4000 | 4×40×7ml vacuum tube | 3270 | ||
| 4000 | 4×18×10ml vacuum tube | 3140 | ||
| 5B-11 | Swing rotor | 4000 | Dairy bottle | 3830 |
| 5B-12 | Fixed rotor | 5000 | 6×15ml | 2540 |
| 5B-13 | 5000 | 12×15ml | 3080 | |
| 5B-14 | 5000 | 24×15ml | 3500 | |
| 5B-15 | 5000 | 30×15ml | 3830 | |
| 5B-16 | 5000 | 4×50ml | 2520 | |
| 5B-17 | 5000 | 6×50ml | 2850 | |
| 5B-18 | 5000 | 12×50ml | 3860 | |
| 5B-19 | 4000 | 24×50ml | 2970 | |
| 5B-20 | 5000 | 4×100ml | 2630 | |
| 5B-21 | 5000 | 6×100ml | 3130 | |
| 5B-22 | 4000 | 12×100ml | 2970 |
Adapter for 800ml and 500ml bucket
| VolumeCup | 5ml | 7ml | 10ml | 15ml | 50ml |
| 800ml（Round Cup） | 23pcs/cup | 23 | 19 | 14 | 5 |
| 500ml（Round Cup） | 18pcs/cup | 18 | 14 | 9 | 3 |
| 500ml（Square Cup） | 20pcs/cup | 20 | 16 | 12 | 5 |
TD5B large capacity centrifuge max capacity can be reached to 4x800ml, can with different adapters for small tubes, 50ml, 15ml, 10ml, 7ml, 5ml, 2ml and so on.
Permagen’s 12 x 1.5 mL Microfuge Tube Magnetic rack is designed for magnetic bead separations from up to 12 tubes
Accommodates many common 1.5 mL Microcentrifuge and some 2.0 mL tubes
Tubes are angled and beads will be pulled to back wall allowing easy aspiration and tip tracking down the front wall of the tubes without disturbing bead pellet
MSR12
Minimum Volume – .5 mL
Maximum Volume – 1.5 mL
Permagen’s 12 x 1.5 mL Microfuge Tube Magnetic rack is designed for magnetic bead separations from up to 12 tubes
K-CITR
SKU: 700004274
72 assays (manual) / 720 assays (microplate) / 840 assays (auto-analyser)
| Content: | 72 assays (manual) / 720 assays (microplate) / 840 assays (auto-analyser) |
| Shipping Temperature: | Ambient |
| Storage Temperature: | Short term stability: 2-8oC, Long term stability: See individual component labels |
| Stability: | > 2 years under recommended storage conditions |
| Analyte: | Citric Acid |
| Assay Format: | Spectrophotometer, Microplate, Auto-analyser |
| Detection Method: | Absorbance |
| Wavelength (nm): | 340 |
| Signal Response: | Decrease |
| Linear Range: | 1.0 to 100 µg of citric acid per assay |
| Limit of Detection: | 0.491 mg/L |
| Reaction Time (min): | ~ 5 min |
| Application examples: | Grape juice, wine, beer, fruit juices, soft drinks, tea, dairy products (e.g. cheese), meat, processed meat, vegetable and fruit products, bakery products, paper, pharmaceuticals, cosmetics and other materials (e.g. biological cultures, samples, etc.). |
| Method recognition: | Methods based on this principle have been accepted by MEBAK, OIV, EU, ISO2963, AOAC and IFU22 (NOTE: If the enzyme oxaloacetate decarboxylase is present in the sample, some of the oxaloacetate product is converted to pyruvate. Therefore, to ensure citric acid is measured quantitatively, D-lactate dehydrogenase (D-LDH) is employed to efficiently convert any pyruvate produced into D-lactate and NAD+). |
The Citric Acid test kit is a flexible and simple method for the rapid and reliable measurement and analysis of citric acid (citrate) in foods, beverages and other materials.
Note for Content: The number of manual tests per kit can be doubled if all volumes are halved. This can be readily accommodated using the MegaQuantTM Wave Spectrophotometer (D-MQWAVE).
View our full list of organic acid test kits.
Advantages
The Citric Acid test kit is a flexible and simple method for the rapid and reliable measurement and analysis of citric acid (citrate) in foods, beverages and other materials.
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