Are You Wearing the Correct Lab Safety Gloves?

April 22, 2014

Are your lab safety gloves compatible with the materials you are using? Are you wearing the correct type of gloves? If not, you and your colleagues could be exposed to chemicals that penetrate the skin, biohazards, and extreme temperatures.

Water-Resistant Cryo-Glove Gloves

Water-Resistant Cryo-Glove Gloves

Sample Types of Safety Gloves include:

Liquid- and chemical-resistant gloves safeguard users from skin-penetrating substances that may irritate and/or cause rashes or burns. These gloves are typically crafted of neoprene, nitrile, latex, polyvinyl chloride (PVC), or butyl. Choose the glove material that is compatible with the chemical you are handling.

Disposable gloves (industrial or laboratory) reduce contamination when used in laboratories, cleanroom environments, and microchip production. These gloves protect you while working with germs, pathogens, or other potentially hazardous samples. You will also find them used in food safety and technology. To maximize finger dexterity and sensitivity, they are made of pliable materials such as nitrile, polyethylene, latex, or vinyl.

Temperature-resistant gloves, as their name implies, provide a barrier that protects skin from extreme cold or heat. Those toiling in ice-cold climates or working in freezers or cryogenics need to safeguard their hands from frostbite. Others working with or around open flames have to have gloves designed to tolerate high levels of heat.

Cut-resistant gloves protect users from punctures, snags, abrasions, and cuts. These gloves are commonly worn in industrial environments or when handling animals. They may be made of Kevlar® or metal mesh, sometimes integrated with another material, or added as coating to enhance the grip.

Check Cole-Parmer’s Safety Glove Chemical Compatibility Database, which lists more than 190 chemicals, to see if your glove material is compatible with the chemicals you are using. Variables such as temperature, thickness of material, concentration of chemicals, and length of exposure will affect the performance of the glove material with the chemical.

View our selection of safety gloves.


Special Masterflex Tubing for Challenging Applications

April 18, 2014

Masterflex® PharMed® BPT Tubing

Masterflex® PharMed® BPT Tubing

Demanding or unique applications require specially formulated tubing. Masterflex® has a pump tubing that will meet the challenge. It is used in chemical processing, research, water treatment, pharmaceutical, biotech, and industrial applications as well as many others.

Consult the list below for special tubing descriptions.

C-Flex ULTRA Pump Tubing is notably advanced when compared to previous generations of C-FLEX. It offers five to ten times the pump life with much lower spallation. The lower spallation virtually eliminates the buildup of residue on the pump head rollers. C-Flex ULTRA offers the excellent chemical compatibility of an SBS-based thermoplastic elastomer formulation.

Exclusive Chem-Durance® Bio Pump Tubing provides excellent chemical resistanceand pumping life and meets USP Class VI standards. A plasticizer-free liner helps reduce spallation. The thermoplastic outer jacket provides more durability—especially under higher pressures.

Viton® Pump Tubing for the chemical resistance of Viton combined with FDA compliance for food andbeverage applications.

PTFE Pump Tubing is chemically inert, will not absorb or leach into fluid, and can withstand pressures up to 6.8 bar (100 psi).

High-Pressure Pump Tubing: Need to pump under pressure? Masterflex High-Pressure PharMed® BPT and Norprene® tubing can withstand up to 10.2 bar (150 psi) continuously. PTFE pump tubing also operates up to 6.8 bar (100 psi) (page 1492), while GORE® Style 100SC and Style 500 pump tubing exhibit long life at up to 4.1 bar (60 psi).

GORE® High-Resilience Pump Tubing—Style 100SC and Style 500 offer a long life at continuous pressures—up to 4.1 bar (60 psi). Both formulations have excellent flow stability with minimal break-in period while also having the benefits of being spallation free and with low gas permeability. The Style 500 formulation has the added benefit of offering excellent chemical compatibility with many inorganic and organic chemicals. These tubing formulations are specifically targeted at industrial applications.

GORE® High-Resilience Pump Tubing—Style 400 is a unique composite of expanded PTFE (EPTFE) and Viton® type F fluoroelastomer (FKM), making it resistant to a wide range of chemistries. Multilayer construction enables tubing to maintain a stable flow rate for hundreds of hours while pumping aggressive media. It is resistant to aromatic hydrocarbons, alcohols (including methanol), steam, and concentrated acids. Primarily for industrial applications, it is designed for long life up to 4.1 bar (60 psi) continuously.

See all Masterflex pump tubing.


Breathing Easier: Air Quality Sampling, IEQ Monitors, and Humidity Meters

April 17, 2014

Recently Paris started enforcing new commuting rules in an effort to reduce smog in the City of Light. Key cities in China, including Beijing and Shanghai, have suffered from poor air quality for some time and now their largest travel agency is offering tourists smog insurance, according to The Guardian.

Many of us are aware that outdoor air quality, especially near major cities, may be less than ideal, but what about indoor air quality? Author Russell McLendon states in 7 Reasons to Consider Indoor Air-Quality Testing, “While we tend to think of air pollution as an outdoor threat, it can be even worse inside the buildings where we live and work.”

Bacharach IEQ Chek™ Indoor Air Quality Monitor with CO2 sensor, range 0 to 20% vol, with pump

Bacharach IEQ Chek™ Indoor Air Quality Monitor with CO2 sensor, range 0 to 20% vol, with pump

Sick building syndrome, as defined by the EPA, can create health and comfort symptoms in occupants and may be the result of inadequate ventilation and/or chemical or biological contaminants. The agency recommends an indoor air quality investigation. Air sampling of basic measurements (such as temperature, relative humidity, carbon dioxide, and air movement) offers an indication of air quality conditions within a facility.

Indoor environmental quality monitors display current conditions and operate as handheld units, fasten to a wall, or stand upright for both portable and stationery use. Specific indoor air quality meters can measure carbon dioxide levels in labs, HVAC systems, food and beverage storage areas, and industrial hygiene settings. Some meters check multiple parameters such as temperature, humidity, dew point, carbon dioxide, and wet bulb, and can be found in greenhouses, office buildings, laboratories, and more.

Humidity meters or thermohygrometers typically measure temperature and humidity and are used to assess conditions in saunas, incubators, museums, industrial areas, and to check ambient air.

Indoor air quality can be compromised by mold and moisture, smoke, radon, asbestos, and other contaminants, include some household cleaning supplies. The EPA states that high temperature and humidity levels can increase the concentrations of some pollutants.

In addition to testing your indoor air quality, check out the EPA’s portfolio of publications on indoor air quality.


Taxing Your Knowledge of Lab Equipment: Take the Tech Challenge

April 15, 2014

On a day known for taxing us, let’s add one more challenge.

Chemical Compatibility with a Plastic Desiccator

TECHCHALLENGE[1]HygroscopINC generally uses large plastic vacuum desiccators (greater than 20 L and up to 28.5″ Hg vacuum pressure) to keep water from reentering its hygroscopic chemicals as they cool from 500ºF. However, they have noticed the plastic starting to crack and fissure when used to cool one of the newer chemicals. They suspect the plastic of their desiccator is not compatible with the fumes of their new chemical, and this is the cause of the fissures inside the plastic desiccators.

They have not noticed any problems with the glass bottles storing the chemical or the silicone and neoprene gaskets on their desiccators, or the metal liner of the caps on the storage bottles. Outside of the glass and the thin stainless steel liner of the caps (silicone and neoprene), they do not have any chemical compatibility data. They are looking for a few desiccators that would be compatible with their newest chemical to replace the fissured plastic units.

What would you suggest?

  1. Glass/Stainless Steel Desiccator with Two Stainless Steel Shelves (08901-60).
  2. The 250-mm Pyrex® Glass Vacuum Desiccator (34548-29).
  3. A vacuum oven with a stainless steel interior (such as the
    1.8 cu ft Salvis® Vacucenter Oven 52402-10).

See answers below

 

  1. Glass/Stainless Steel Desiccator with Two Stainless Steel Shelves (08901-60).
    Correct! This desiccator has a high capacity interior and is made of parts that are already known to be compatible with the new chemical.
  2. The 250-mm Pyrex Vacuum Desiccator (34548-29).
    Incorrect. Based on the large volume the customer needs the desiccator to hold, this unit will not be sufficient. It has only a 10.5 L capacity.
  3. A vacuum oven with a stainless steel interior (such as the
    1.8 cu ft Salvis Vacucenter Oven 52402-10)

    Incorrect. Although this option would satisfy the internal capacity and chemical compatibility issue, it is overkill. A much more economical alternative exists.

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