Frequently Asked Questions

BSCs and Laminar Flow Hoods

Centrifuges

Cold Storage Products

Incubators

Pathology Lab & Autopsy

Temperature Monitoring

Does D.A.I. Scientific carry hoods that can accommodate monitors and keyboards for pharmacies?

Yes. All of the Baker laminar flow hoods and biological safety cabinets we offer can be equipped with Ergotron monitor and keyboard brackets, and even mounted camera systems.

What are the disadvantages of laminar flow hoods?

A laminar flow hood protects your samples, but it doesn’t protect you and your colleagues in the lab. This type of lab equipment is recommended for work with non-hazardous materials.

What are the advantages of laminar flow hoods?

They protect products and samples for a variety of life science, industrial lab and process applications. As Baker explains, “Baker's EdgeGARD® HF horizontal laminar-flow clean bench provides HEPA-filtered air and proven product protection ideal for a range of laboratory applications. With a patented cabinet design incorporating high-velocity return air slots, EdgeGARD® HF provides precise control of airflow volumes and velocities, thereby maximizing product protection and ensuring Class 100 cleanliness in the laboratory.” They come in two models, vertical and horizontal, depending on the desired direction of your airflow. If space is tight in your lab, consider a vertical model, which isn’t as deep. Space-saving models are also a great option for limited areas, such as IV and nursing stations, satellite pharmacies and intensive care units.

Why are laminar flow hoods important?

Laminar flow hoods provide protection for samples and work procedures.

What is the difference between horizontal and vertical laminar flow hoods?

The two categories of laminar flow hoods refer to the direction of airflow within the hood.

How do laminar flow hoods work?

Laminar safety hoods provide particulate-free, HEPA-filtered uniform airflow. You can see how the air flows in Baker’s informational videos.

What does a laminar flow hood do?

A laminar flow hood, also known as a laminar flow clean bench, protects products and samples for a variety of life science, industrial lab and process applications with particulate-free, HEPA-filtered uniform airflow across the work area. It’s important to note, however, that laminar flow hoods do not provide protection for workers or the environment.

Do you have anything that provides containment of biological agents or infectious substances?

Beckman's Aerosolve canisters and bucket covers offer protection from aerosol leakage and spills from rotor buckets. They have bucket covers ranging from 1.5 mL tubes to 750mL bottles. They also have covers for microplates.

What happens if you don’t balance a centrifuge?

If the centrifuge isn’t balanced, you could run the risk of damaging the rotor or worse — injuring yourself and anyone near the unit.

What does it mean to balance a centrifuge?

Balancing a centrifuge means loading the same amount of weight on either side of the rotor so that the unit is balanced.

What are centrifuges used for?

Centrifuges are used to separate materials with different densities, such as solids and fats.

Does D.A.I. Scientific have refrigeration products that meet current Energy Star standards?

Yes. We have a wide variety of refrigerators and freezers (ranging from -20° to -80° C) with Energy Star listings. These units utilize new, natural refrigerants that are both environmentally friendly and energy efficient.

What is the lowest temperature for an ultra low freezer?

Typically, ultra low freezers go as low as -86 C.

What are ultra low temperature freezers used for?

Ultra low temp freezers are used to preserve and store biological samples.

What companies make ultra low temperature freezers?

DAI sells PHCbi ultra low freezers.

How much is a cryogenic freezer?

The price range varies between $2,000 for a small manual fill dewar to $75,000 for our largest auto fill tank. Pricing depends also on the type of inventory racks/system. Custom storage racks are available depending on the type of samples you intend to store.

What prevents liquid from spilling in a cryoshipper/vaporshipper?

These shippers utilize a highly effective hydro-phobic absorbent that absorbs the LN2 and maintains cryogenic temperatures while eliminating spillage in transit.

How does a manual fill dewar work?

A dewar is a storage tank that will hold samples and liquid. Similar to an autofill, customers can have samples stored in liquid or vapor phase. Unlike an autofill freezer, there is no supply tank connected to the dewar. The customer has to manually fill each dewar.

How does an autofill freezer work?

An autofill freezer requires being connected to a liquid nitrogen supply. Storage tanks use vacuum insulation to hold liquid nitrogen. There is a special cryogenic hose that runs from the supply tank to the freezer. The freezer has a microprocessor that controls the liquid levels via sensors and a solenoid valve. Samples can be stored submerged in the LN2 liquid (called liquid phase storage) or have the samples stored above the liquid (called vapor phase storage).

What does cyrogenic mean?

Cryogenics is a branch of physics that refers to the production and effects of materials at extremely low temperatures. The cryogenic temperature range has been defined as from -150°C (-238°F) to absolute zero (-196 °C or -320°F), the temperature at which molecular motion comes as close as theoretically possible to ceasing completely.

What is an incubator used for?

Laboratory incubators are typically used to grow bacteria or other types of microorganisms in a controlled environment. This could include pharmaceutical or biology testing or insect breeding. Some incubators are used to maintain the growth of a cell culture or store samples in which certain environmental conditions are needed.

What do you need to set up an incubator?

All incubators need electricity and CO2, and multi-gas incubators need a combination of CO2 and nitrogen. This can be supplied by a stand-alone gas cylinder, though some labs may have a manifold system that pipes the gas into the incubator.

How does an incubator work?

An incubator is an insulated unit equipped with a variety of features that allow you to control the temperature, humidity and CO2 levels in order to create the optimal working or growing conditions.

What does an incubator do?

An incubator provides temperature and gas uniformity in order to grow and maintain the growth of cultures without fear of decontamination.

Do you have any way of controlling contamination?

Yes, there are several options to consider. These range from a passive copper-alloy stainless steel built into the chamber to an active method like UV lights, H2O2 decontamination and high heat systems.

Do I have to buy a CO2 regulator from the manufacturer?

Not necessarily, but the regulator from the manufacturer comes with the right hose barb fittings and proper gauges to read the PSI of the tank. If you decide to purchase one from a different source, make sure it is a “dual gauge” regulator that comes with the correct hose barb sizes you need.

Can you stack CO2 incubators?

Yes, but we always recommend obtaining a stacking kit from the incubator manufacturer to ensure the units are secured properly. When stacking two CO2 incubators, it’s also important to consider a roller base so that you can easily move the units.

Do CO2 incubators need water?

Yes. Most CO2 incubators have a water pan in the bottom of the chamber. Some units might have an external reservoir from which water is automatically pumped into the chamber.

What is the difference between an incubator and CO2 incubator?

A microbiological incubator is one that solely controls temperature. A CO2 incubator uses CO2 to control the pH of the cultures stored inside and has high humidity levels in the chamber.

Does D.A.I. Scientific’s grossing stations come with ergonomic features?

Yes. Many of the Mopec grossing stations we have available come with a built-in lift that enables the user to change the work surface height with just the press of a button. You can also add monitor and keyboard brackets to your grossing station for even more ergonomic design.

Can I store bariatric bodies in my morgue cooler?

Yes, all the Mopec coolers can accommodate bariatric bodies. Talk to your local representative to see what’s the best solution for your space.

What type of cart would I need to help transfer bodies from the room to the morgue?

Mopec has a variety of covered cadaver carriers, including hydraulic units that can easily be adjusted for height.

What type of carts, trays and racks will I need?

We can help ensure a seamless workflow by specifying the correct autopsy table/sinks, carts, lifts and racks to minimize handling and ensure a safe workspace.

Can I install an independent temperature monitoring system in my laboratory freezer?

All of our lab freezers provide an access port for you to install your temperature probe into the freezer. To save money, a lot of customers use a low-cost residential freezer that does not have an access port for the temperature probe, which means they run the probe through the door gasket. The probe cord causes an air gap along the door gasket line. This enables warm room air to enter the freezer, which accelerates the frost buildup.

Can I run my data logger cord through the door gasket?

That is not recommended because the cord will cause an air gap along the door gasket. This gap will allow air into the unit, causing frost issues and warming the inside. All of our units have an access port through which you can run your data logger probe. This provides a tight seal.

Can I install an independent temperature monitoring system?

All of our lab refrigerators provide an access port for you to install your temperature probe into the refrigerator. To save money, a lot of customers use low-cost residential refrigerators, which don’t have an access port for a temperature probe. This means they run the probe through the door gasket. The probe cord causes an air gap along the door gasket line, which allows warm room air to enter into the freezer and affects temperature uniformity.  

Can I install an independent temperature monitoring system?

All our lab freezers provide an access port for you to install your temperature probe into the freezer. To save money, a lot of customers use a low-cost residential freezer that does not have an access port for the temperature probe, which means they run the probe through the door gasket. The probe cord causes an air gap along the door gasket line. This allows warm room air to enter the freezer, which accelerates the frost buildup.