There are eight million stories in the naked city; this is one of them. Okay, if you didn’t grow up in the 60′s, you probably have no idea what I’m talking about. This was the opening line from the old Dragnet TV Series. Guess I’m dating myself. Getting to the point, here’s another nifty item that probably wasn’t around back then. The Fingerprint Development Chamber. The unit is designed to accelerate the Fingerprint Development Process.
Fingerprints are detected at a faster rate, and with better clarity, by precisely controlling conditions of high temperature and high relative humidity. Typical operating conditions are 100ºC for DFO and 80ºC/65% RH for
Ninhydrin. The wide temperature and humidity range allows fingerprints to be processed in just a matter of minutes in comparrison to days from technology of the past. The large viewing area offers easy observation of critical samples. The chamber interior is made of seam-welded aluminum coated with high-quality, corrosion-resistant epoxy paint.
Specifications for the Chamber are as follows:
- Chamber Volume: 141.6L
- Exterior Dimentions: 37 x 29 x 26
- Humidity Control: +/- 3%
- Interior Dimentions: 22 x 24 x 18
- Relative Humidity: 40% – 80%
- Temperature: +/- 0.5 c
- Temperature Range: 40 -100 c (104-212 F)
Standard Features Include:
A low water level warning light notifies the operator when to add water.
Digital countdown timer displays time remaining in test procedure.
Slide-out shelves allow for quick and easy loading and unloading of samples.
Unit comes complete with a key lockable door and two rods and four clips for hanging evidence.
For additional information or availability, please give any one of our knowledgeable staff a call or email here at Labplanet.
Thanks for reading my blog. As always, I welcome your feedback and comments.
The antigens of a microorganism can be determined by a procedure called serological typing also known as sero typing. This involves adding a suspension of microorganism to antiserum that contains antibodies specific for antigens associated with the microorganism. If antigens are present, the antibodies in the antiserum will react with the antigens on the bacterial cell and cause the cells to agglutinate or form visible clumps. Serotyping comes in handy when identifying Salmonella and Shigella, that cause infections in humans such as typhoid and bacillary dysentery. Salmonella can be differentiated into more than 2500 different serotypes based on antigenic differences associated with the cell. Serotyping of Salmonella and Shigella is useful in tracing epidemics caused by a particular strain of serotype of the respective organism.
As mentioned in some of my previous blogs, if nothing else, the one thing I love about my job is, “It’s Not Boring”. I wanted to talk about Freeze Dry Systems. In particular, LabPlanet represents Labconco’s FreeZone Product Line. Working with a client earlier this week, prompted me to do a blog. Knowing very little about Freeze Dry Systems prior to working with my client, I thought that this device was, excuse the pun, was pretty cool stuff.
FreeZone Triad Freeze Dry Systems are designed for lyophilization (freeze drying of blood plasma or other biological substances) stoppering tray dryer and sample freeze drying. This unit has four sample valves on the left side. The ability to freeze dry both types of samples can be run at the same time.
The chamber pre-freezes samples to save money and time, eliminating the need for a separate freezer and product transfer. The microprocessor controls up to five different ramping and holding segments to meet different temperature protocols. It also has a hot gas defrost.
Unbeknownst to me prior to learning about the world of freeze drying, it is recommended that Freeze Dry Glassware , (as pictured on the right)
be used with your samples. Additionally, a Vacuum Pump with displacement of at least 144L/min is required.
This is also a range of accessories available including Shell Freezers, Tray Dryers, Drying Chambers and Product Shelves.
As always, our knowledgeable staff here at LabPlanet.com are happy to work with you in creating the system to meet your needs.
Your comments and suggestions are welcomed.
What does it mean when a product is lyophilized? It means it is freeze dried but there is more to the lyophilization process than freeze drying. Lyophilization is necessary to preserve products for storage. Water causes spoilage and can chemically react with the product (hydrolysis). Removing water can significantly prolong the shelf life and stability of a product. A product can be lyophilized in bulk on trays, in bulk in bottles, or in individual vials on trays. The product or sample is first dissolved in a suitable solvent. Often this solvent is water, sometimes other solvents must be added such as ethanol or n-butyl alcohol. The product is then frozen. A vacuum is applied and the ice and solvent sublime from the product and are removed from the air by the condenser. The trays on which the samples are placed are temperature controlled so the sample can be warmed slightly to aid in removing the last bit of water. The solvent chosen, the temperatures, hold times, and pressures used - are individual to each formulation and must be adjusted for maximum shelf life of the final product. Equipment for freeze drying is available from small benchtop research units to room sized production units. SP Industries and Labconco are just a few suppliers of lyophilization equipment.
I’m sure it’s just a coincidence, but for some reason I’ve been getting a bunch of requests for Wash Bottles lately.
I myself, not coming from a lab background other than school, the majority of
my experience with the 500,000 plus laboratory items, comes from working here at LabPlanet.
Needless to say, selling lab gear is not boring. So when looking at an item like Wash Bottles, the closest thing that I relate to them is when I use to do a lot of biking and using a similar bottle to keep myself hydrated. All kidding aside, these bottles are constructed much better than the sqeeze bottles that I had. Made from Polypropylene these bottles are also autoclavable. In reality, I understand that the make up and colors are for a specific reason and purpose.
Features include a one-piece polypropylene stem and closure The transparency makes liquid contents easy to view, while the bottles flexibility maks it easy for dispensing. The draw tube is actually welded into cap to prevent separation and leakage.
Standard sizes are typically 500 mL t0 1 L . The color coding is as follows: acetone (red closure), ethanol (natural closure), isopropanol (yellow closure), methanol (green closure), toluene (red closure), and water (blue closure).
Note: LDPE wash bottles are intended for short term dispensing use only and not for storage of acetone, dichloromethane, toluene, and 1,1,1-trichloroethane.
As always, I would encourage you to contact any of our staff here at LabPlanet with any questions that you may have.
Environmental chambers are one kind of refrigerated incubator. Some others are: BOD incubators, diurnal incubators (plant growth chambers), and stability chambers. These types of incubators have refrigeration as well as heating as they must sustain temperatures lower than or equal to the ambient temperature. Refrigerated incubators (chambers) may also have humidity control. Plant tissue and plant growth research, entomological studies, environmental simulation, biochemical Oxygen demand, and stability studies are just a few applications for refrigerated incubators. Controlled temperatures can range from -70 to 180 °C for environmental chambers. Humidity control can range from 10 to 98% relative humidity. Lighting can be added for plant and entomological work and to study the affect of light on products such as polymers and coatings. Sizes range from around 2 cu.ft. to >30 cu.ft. Manufacturers of refrigerated incubators include but are not limited to: Binder, Caron, Sheldon Manufacturing, Nor-Lake Scientific, and Thermo Scientific.
The Shigella are divided into four species: Shigella dysenteriae, Shigella boydii, Shigella Flexeri, and Shigella sonnei. Like the Salmonella, the four species are divided into a number of different serotypes. Serotypes are strains that have similar biochemical characteristics but differ in their antigenic composition. Various lines of evidence, including genetic analysis, suggests that the Shigella may be pathogenic variants or pathovars of Escherichia coli. Shigella affect only primate hosts and have a narrower range than E. coli. Shigella is of great medical importance due to its ability to cause gastroenteritis, bacillary dysentery, foodborne illness, and diarrhea in humans.
I thought a blog on First Aid Kits would be an interesting topic to bring up this week. This is one of those things you don’t think about or appreciate until you need it. There’s nothing more frustrating than needing a bandage or antiseptic and either finding that the first aid kit you have is empty or worse, you can’t find it.
With that being said, I started thinking that this might be a great holiday gift for my relatives this season. If nothing else, it is unique. The Pac-Kit picrtured on the left, is marketed as a 10 person vehicle safety kit, housed in a weather proof steel boxl.
The contents of the kit includes:
Adhesive Strips 1 x 3 in, Adhesive Tape 1/2 in, Antiseptic Wipes, Eye Flush (1 oz.), Eye Pads (with strips), First Aid/Burn Cream Packs, Forceps, Gauze Bandage 4 in, Gauze Pads 3 in, Instant Cold Pack, Scissors, Triangular Bandage, Exam Gloves, Wipe/s. Note, these kits are also available in 25 and 50 person configurations.
As you can imagine, there are many kits with various content offerings to choose from. As always, our knowledgeable staff here at OpticsPlanet would be happy to assist you in selecting the best kit for your needs.
I appreciate you taking the time read my blog and welcome your feedback.
The CO2 incubator is a must for certain types of cell culture including mammalian cell culture. Mammalian cells tend to thrive at a pH of about 7.4. However some cell lines need slightly more acidic (7.0) or basic (7.7) media than other cell cultures. The bicarbonate buffers such as HEPES used in the culture medium are affected by the CO2 in the atmosphere thereby changing the pH. An atmosphere of 4 to 10% CO2 depending on the pH required will help to maintain the proper balance of CO2 to bicarbonate. CO2 incubators can be air jacketed, or water jacketed if more precise temperature control is needed. Inside the incubator a sensor monitors the temperature, the microprocessor uses this information to control the temperature. If the incubator is used routinely at the same temperature a thermal conductivity (TC) sensor is sufficient. If the conditions in the incubator must be changed frequently an infrared (IR) sensor is a better choice. CO2 incubators can be as small as 1.4 cu.ft. and larger than 30 cu.ft. Some CO2 incubators also have controls for N2 and/or O2. The gases must be supplied by cylinders which are secured safely and using the proper regulator. Manufacturers of CO2 incubators include but are not limited to: Caron, Shellabs, Binder, Thermo Scientific, and VWR.
Here’s a nifty device that would come in handy for many of the laboratory tests and tasks that you might run. A Countdown Controller/timer can be used to perform reproducible stirring, heating, or pumping funictions. It is used for timed shutdown or start-up of apparatus during any test.
This timer pictured on the left is programmable in any one-minute interval from 23 hours, 59 minutes to 1 minute. Countdown mode turns any piece of equipment on or off at the end of a set time period, which eliminates scheduling time-of-day settings and reduces programming time. Time-of-day mode permits programming of 14 a.m./p.m. clock settings for each day of the week, up to 196 on/off settings per week. It also has a manual override function allows equipment to be switched on/off instantly without disturbing the program.
For running multiple tasks at the same time, a Three-Channel Alarm Timer with Triple Display (pictured on the right), will let you run three separate lab operations simultaneously. Unit also serves as a stopwatch and a time-of-day clock. Channels may be started individually or simultaneously and you can program each channel from one second to 99 hours, 59 minutes, 59 seconds. The unit has an adjustable alarm volume which allows for use in either a noisy or quiet environment.
The timers that I chose for this blog are only two of several that are available. I encourage you to give our knowledgeable staff here at LabPlanet a call for assistance or additional information.