N-(Amino-PEG4)-N-bis(PEG4-propargyl) HCl salt is a trifunctional linker with two terminal alkynes and a primary amine. The terminal alkynes can be linked to azides using copper click chemistry while the primary amine is reactive towards carboxylic acids, NHS esters, ketones and aldehydes to form a variety of stable bonds.
N-(Amino-PEG4)-N-bis(PEG4-propargyl) HCl salt is a trifunctional linker with two terminal alkynes and a primary amine. The terminal alkynes can be linked to azides using copper click chemistry while the primary amine is reactive towards carboxylic acids, NHS esters, ketones and aldehydes to form a variety of stable bonds.
The iST Scientific extra volume 384-well full-skirted plate enables post-PCR applications such as enzymatic digestions and ethanol precipitation to be carried out in the wells due to the increased well volume.
Control System:
5.4”LCD Touch Screen Display
>The display can simultaneously display:all main parameters such as cold trap temperature,vacuum degree,sample temperature, and shelf temperature.
>Schematic diagram of equipment operating components,through graphic display to view the working status of each component of the equipment.
>Ithas the functions of cold trap precooling and vacuum pump preheating,and the time can be set by the userin the system. >Display whether the current running status is normal or not by numerical color.
>Built-in saturated vapor pressure &temperature corresponding relationship table,dearly displaying the corresponding relationship.
o One-key operation,the operation is extremely simple,no special professional learning and training is required.
o Thermal electromagnetic over-current and short-circuit protection,making the equipment run more safely and stably.
o Active reminder of equipment maintenance time and vacuum pump replacement lubricating oil time.
o Ambient temperature monitoring,the device automatically reminds the alarm if the ambient temperature is too high.
o Optional eutectic point detection device and endpointjudgment detection system make freeze-drying more scientific.
Drying chamber | · The separate drying chamber reduces the probability of damage caused byimproper handling of the drying chamber due to height and weight.The upper cover is anodized aluminum with anti-corrosion treatment.●Highly transparent plexiglass drying chamber,good light and heat radiation conduction.Reserve 6/12 external valve ports.· 316L stainless steel all black Teflon coating drying chamber,suitable for drying organic solvents and various corrosive samples,reserved for 6/12 external ports.· 316L stainless steel vertical multi-port multi-manifold external rack(The standard configuration is aplexiglass drying chamber,and one ofthe diying chambers can be optional) |
Cold trap andcondensing coil | · The cold trap cavity and condensation coil are made of 316L stainless steel.Large opening and channel design,the gas can be quickly captured through the condensing coil.· The cavity and condensing coil are equipped with Teflon anti corrosion coating as standard,which can trap organic solvents and various corrosive solvents.· The condensing coil is placed in the cold trap to increase the condensate catchment area,which can effectively prevent external condensation. |
Sample shelves | · 316Lstainless steel stackable sample shelves,capable oflyophilizing machine solvents and various corrosive solvents.Each shelf can be placed and taken freely without manual work.The distance and height ofeach shelfcan be adjusted freely.-All black coating,good heat absorption performance.-Special hole for freeze-drying of centrifuge tubes,which is conducive to the drying of samples in centrifugetube containers.· All-aluminum Teflon surface anti-corrosion treatment electric heating shelf. |
Refrigerationsystem | · Danffos compressorCopper plate heat exchanger,the largest area to increase heat dissipation· Unique refrigeration technology,the temperature of the cold trap can be lowered from ambient temperatureto below-80C°within 2 minutes.· Class A temperature sensor with high temperature accuracy and low error.· Multiple detection and alarm system,the refrigeration system pressure is too high or refrigeration failure cantimely alarm and take corresponding measures. |
Techinical parameter
| Item No | ST7003 | ST7006 | ST9006 | |
| Ice condenser capacity | 3kg | 6kg | 6kg | |
| Ice condenser temperature | -70℃ | -70℃ | -90℃ | |
| Cold trap volume | 5L | 10L | 10L | |
| Freeze dried chamber | Bell shape (standard configuration)/Multi manifold type/T-shaped frame type | |||
| Sample shelf | φ200mm.Single layer area 0.03m2 with 3-5 layers available | ●260mm/485mm.Single layer area 0.055m²/0.185m².3-10 layers/optional ● Electric heating/manual capping/optiona | ||
| Vacuum pump | Extreme vacuum 5*10*mbar with a pumping capacity of 8m³/h optional pump of various types | |||
| Oil mist filte | Standard configuration | |||
| Vacuum pump connection pipe | Single forming stainless steel flexible pipe DN16 ISO-KF L-1.2m | |||
| Anti-corrosive treatment | Cold trap,condensing coil/all equipped with PTFE anti-corrosion treatment as standard. Freeze-drying organic solvents. | |||
| External valve | 6pieces/optional | 1-48 pieces/optional | ||
| Eutectic point detection system | Support/Optional | |||
| Data output analysis | Support/Optional | |||
| Powe | 0.6kw | 1.1kw | 1.5kw | |
| Size | 420*545*455mm | 510*570*500mm | ||
Freezer Dryer, 3kgs-6kgs water capturer
Model:
ST7003,ST7006,ST9006
Brand:
Yingtai
Usages:
For selective enrichment of Salmonella.
Principle:
Peptone provide carbon and nitrogen sources to meet the needs of bacterial growth; lactose are fermentable sugars; selenite, sodium hydrogen inhibit Gram-positive bacteria and gram-negative enterobacteria most non-Salmonella; phosphate-buffered agent; L- cystine as a reducing agent.
Formulation(per liter):
Peptone: 5g
Lactose :4g
Sodium selenite: 4g
Disodium hydrogen phosphate: 10g
L- cystine: 0.01g
Final pH 7.0 ± 0.2
How to use:
1. Weigh 23g of the product , adding 1 L of distilled or deionized water , heated to boiling stirring until completely dissolved, dispensing flask, cooled to room temperature .
2. Pipette 10mL of pre-enrichment sample broth or 25mL and transferred species in the liquid sample flask in a sterile environment.
3.Place into incubator, cultured at 36 ± 1 for 18-24h.
4. Observe the results.
Quality control:
Quality control strains were inoculated ,and cultured at 36 ± 1 for 18-24h ,results show as follows:
strain name strain code growth feature
Salmonella typhi CMCC (B) 50071 good red, cloudy
Salmonella typhimurium CMCC (B) 50115 good red, cloudy
Escherichia coli ATCC25922 — remain unchanged
Storage: Store in a dark, cool and dry place, tighten the cap immediately after use. Storage period of three years.
500g
