A Complete Guide to Safety Glasses

A Complete Guide to Safety Glasses

Safety Glasses Eye Protection Guide

The eyes are among the most vulnerable parts of the body, so selecting the right form of protection to keep them safe in certain work conditions is of critical importance. Here, we’ll provide an overview of everything you need to know when seeking out this essential form of protection.

Know Your Hazards

Before you can select the right type of eyewear for your needs, you should start by identifying the hazards in your workplace. Your environment could include any of the following risks, as well as combination of them:


  • Chemical: Any line of work exposing individuals to harmful liquids or substances or acids pose chemical risks. These risks include splashes, droplets, spraying, and even causing irritation through mist.

    3M Safety Splash Goggles 334, Clear Lens
    3M Safety Splash Goggles
  • Impact: Occupations like masonry work and carpentry are notorious for their impact risks to the eyes. Sanding, chipping, grinding, and machining are likewise dangerous. Flying particles and fragments can cause serious damage to eyes.

    Crews Checklite Safety Glasses, Clear Lens
    Crews Checklite Impact Safety Glasses
  • Heat: Welding is one common line of work which exposes operators to heat-related damage. Hot sparks and splashes from high-temperature materials can cause devastating burns, not just to the eye itself but also the surrounding skin.


  • Dust: If your line of work involves woodworking or buffing of any sort, it’s important to keep your eyes protected against fine dust. Even seemingly harmless particles can cause eye irritation. At worst, they might even cause microscopic scrapes on the eye.


  • Optical Radiation: Any job where UV or IR light or laser arcs are produced warrants the need for eye protection. These types of activities could include torch brazing and welding.

Exposure one of these hazards can cause serious damage to the eyes, and could even cause complete or partial loss of vision.

Understand ANSI Devices

ANSI, the American National Standards Institute, sets forth standards for eye and face protection by evaluating hazards and recommending specific types of eye protection to be worn for each. ANSI guidelines identify the following types of eye and face protection:

  • Face Shield: Face shields are designed to either fully or partially protect the wearer’s face. Oftentimes, they consist of a helmet or similar type of headgear and a detachable mask or shield.
  • Full-Face Piece Respirator: Designed to also support the wearer’s ability to avoid inhaling toxins, the full-face piece respirator covers the surface of the entire face, including the nose, mouth, and eyes.
  • Safety Goggles: A general term for safety glasses, this form of protection surrounds the wearer’s eyes to shield them against some or all of the hazards described above. Note the difference between safety glasses, which feature arms that sit on the ears, and goggles, which feature a strap to create a tighter seal against the wearer’s face for a higher level of protection.
  • Welding Face Shield, Goggle, or Helmet: Some types of eye and face wear are designed specifically to protect against the weld spatter and optical radiation produced by welding.

After determining which type of device is best suited for your application based on ANSI guidelines, you can move on and assess which lens will offer the right form of protection.


Learn About Lenses


When it comes to finding the best type of eyewear for your work conditions, one of the most important factors to consider is lens type. Let’s take a look at some options.


Lens coatings can play an important role in enhancing the wearer’s visibility. Some are also designed to prolong the lifespan of the goggles or glasses. Here are some common types of coatings:

  • Scratch-resistant: As its name suggests, an anti-scratch lens/coating on safety glasses can extend the lifespan of the eyewear by protecting the lenses against scratches.

    Jackson Safety V40 HellRaiser Safety Glasses, Smoke Lens, Black Frame
    Jackson Safety V40 HellRaiser Scratch Resistant Safety Glasses
  • Anti-static: In sensitive environments where static could compromise components the wearer works with, anti-static coating helps to reduce dust and can even limit particulate attraction.


  • Anti-UV: For workers exposed to UV radiation, anti-UV coated eyewear is a must. These lenses can absorb upwards of 99.9% of radiation, thus protecting the wearer against long-term retinal damage.

    iNOX F-I UV Safety Glasses
    iNOX F-I UV Safety Glasses
  • Anti-fog: If your workplace is located in a humid environment, anti-fog coatings can help you see clearly by deterring moisture buildup on lenses.

    3M Virtual Protective Eyewear V4, Clear Anti-Fog Lens
    3M Anti-Fog Lens Safety Glasses
  • Hard: Hard coatings can be bonded to most types of lenses to prolong their lifespan.


Different lens colors are designed to support specific types of tasks. To help you decide which option is right for your needs, simply refer to the color wheel. Lens colors will absorb light of opposite shades. For example, blue will absorb yellow light, since they are on opposite sides of the wheel.

  • Amber: This tint blocks blue light and is best-suited for applications where there’s low light.

    iNOX F-II Wrap-Around Amber Lens Glasses
    iNOX F-II Amber Lens Safety Glasses
  • Brown: Glares produced by outdoor light are blocked effectively with brown lenses.


  • Clear: If there’s no danger of optical radiation, clear lenses may be a good fit for the task, as they offer a completely unfiltered view of the wearer’s surroundings.

    Crews Checklite Safety Glasses
    Crews Checklite Clear Safety Glasses
  • Gold, Blue, or Mirrored: Like brown lenses, these tints are ideal for outdoor wear because they block sunlight. Mirrored lenses take it a step further by reflecting light.

    iNOX F-1 Wrap-Around Blue Mirror Lens
    iNOX F-I Blue Mirror Lens Safety Glasses
  • Gray: Gray lenses prevent against eye fatigue in outdoor settings by keeping glare at bay.


  • Indoor/Outdoor: This tint is similar to gray, except for the fact that it can also be useful indoors since it protects against glare from artificial light sources.

    Jackson Safety V30 Nemesis Indoor/Outdoor Lens Safety Glasses
    Jackson Safety V30 Nemesis Indoor/Outdoor Lens Safety Glasses
  • Vermilion: Often used for interior inspections, this tint can improve contrast.

Filter Shades

A final consideration for glasses is the shade of the filter. The darkness spectrum ranges from 1.5, which is the lightest, to 14, the darkest. While darker lenses are needed for duties like electric arc welding, lighter shades can be used for activities with less risk of optical radiance, like torch soldering. Of course, it’s always a good idea to err on the side of caution and select the darkest available lens that won’t inhibit job performance.


As you can see, the world of safety glasses can be overwhelming. With so many different factors to consider, finding the right pair isn’t always a quick and easy task. If you’re seeking safety glasses for your own protection or for your workplace, look no further than Harmony Business Supplies. We have an extensive collection of eye protection available on our website, and if you need assistance deciding which pair is right for you, one of their product specialists will be glad to help.

MALDI-TOF MS Analysis: Inoculation Loops vs Wooden Transfer Sticks?

MALDI-TOF MS Analysis: Inoculation Loops vs Wooden Transfer Sticks?

MALDI analysis stands for matrix-assisted laser desorption/ionization and is used in a variety of industries to identify bio-molecules, such as DNA as well as organic molecules, such as polymers. TOF MS stands for time of flight mass spectrometry. MALDI-TOF MS can be used in microbiology, as well as biochemistry and medicine.

In medicine specifically, the technique is used to diagnose certain diseases. For instance, MALDI-TOF can identify a specific membrane protein linked to pancreatic cancer, and it can also pick up on necrotizing enterocolitis (NEC), a serious disease that can affect infants. MALDI-TOF is commonly used to detect potentially aggressive diseases because it can analyze samples rapidly. It does not require the same amount of time required to process samples as certain other sampling techniques, such as X-ray crystallography.

Inoculation/Smear Loops & Microstreakers for MALDI-TOF

Inoculation/Smear Loop
Inoculation/Smear Loop

However, the tools with which MALDI-TOF is performed also impact the rate at which results are produced. For many years, lab technicians have relied on metal or plastic inoculation loops, commonly referred to also as smear loops and microstreakers, to collect bacteria for MALDI-TOF testing. While reusing an instrument may seem like it would help you save on operating costs, the process can actually have adverse effects: it’s quite time-consuming and can even compromise your samples.

Consider the fact that traditional inoculation loops must be completely sterile before being used. Using a micro incinerator or Bunsen burner, the person processing the sample must autoclave the inoculation loop for a period of at least 10 seconds prior to sampling. This must be completed every time, which can lead to a long, drawn-out process. Additionally, you must also introduce your environment to an open flame repeatedly, which presents its own set of risks.

The inoculation loop must then be cooled, but in order to prevent contamination, you must use a pure sterilization source such as sterile agar. The instrument should be cooled for at least 15 seconds to cool it completely; otherwise, you could risk compromising the bacteria due to its heat.

In clinical environments where many samples are processed in the course of one day, this procedure can quickly become too time-intensive. Additionally, the risks of human error and potential contamination increase substantially when you continuously reuse the same instrument. Thus, many users have sought disposable solutions to expedite their workflow. Unfortunately, plastic loops can be too costly to dispose of between each sample. For this reason, many lab techs need a cost-effective yet sterile instrument they can perform MALDI-TOF testing with.

Disposable Wooden Applicator Transfer Sticks for MALDI-TOF

Puritan Pointed Wood Applicator Sticks
Puritan Pointed Wood Applicator Sticks

Enter the Puritan Tapered Pointed wooden applicator stick. Featuring pointed tips, these sticks can transfer samples with ease, completely eliminating the need for sterilization in between processing. They’re also affordable enough to be disposed of without impacting your bottom line. And in fact, because of the time savings achieved through this approach, using disposable wooden applicator sticks to perform MALDI-TOF testing typically winds up being the more economical option in the long run. You can choose from Sterile or non-sterile applicators for transfer to MALDI racks for analysis.

Harmony Business Supplies has a broad range of wooden applicators available online, including sterile tapered pointed wooden applicator sticks. If you need any assistance with your order, simply reach out to one of our product specialists for help.

Harmony Business Supplies

How to Avoid Germs This Flu Season

How to Avoid Germs This Flu Season

Ways to Avoid Germs this Flu Season

Germs are a concern year-round, especially in shared environments like workplaces. Yet, during flu season, it’s particularly important to avoid picking up any germs. According to the CDC, flu viruses can range in severity from mild to severe, and for more than 4,600 people per year, they’re even fatal.

The flu is most dangerous for elderly individuals, pregnant women, children, and people with certain preexisting medical conditions. With that being said, even people in excellent health can become severely ill from particularly strong strains of the virus. Since no one wants to spend days (or in some cases, even weeks) feeling their worst, there are a few tips you can implement to keep flu germs at bay in your family, workplace, and community:

Talk to Your Doc . . .

They’ll likely recommend the flu shot for you and your family members – it’s the single best way to prevent contracting the illness. Only a select portion of the population – including those who have had severe allergic reactions to the vaccine – should avoid flu shots. However, it’s always a good idea to get a professional’s opinion. Also, keep in mind that flu vaccinations wear off over time. The vaccine is updated each year to reflect current strains, so be sure to follow the vaccination schedule recommended by your physician.

. . . Don’t Consider Yourself “Immune”

If you’ve received a flu vaccination, it doesn’t mean you’re completely immune to contracting the virus. In fact, the CDC reports the risk of contracting the flu is reduced by 40-60% in patients who receive the vaccine. The overwhelming majority of medical experts still consider it worth getting, but know that it protects against certain strains than others. This means you’ll still need to take precautions to avoid falling ill, so keep reading even if you’ve received or plan to receive a flu shot.

Encourage Employees to Stay Home

The best way to keep flu germs out of the workplace is to prevent infected employees from bringing them in. If you manage a team or oversee a business, encourage your personnel to stay home when they’re feeling under the weather. Most strains are highly contagious, and can even be contracted when you breathe in a flu aerosol particle from ten feet away!

Wash Hands Regularly

There are certain environments – such as your home and personal work space – which you can control and keep clean. In public environments, however, you’re bound to come into contact with flu viruses at one point or another. To limit your exposure, wash your hands often, and always before eating or touching your face. When you’ve come into contact with frequently-used public objects, like cafeteria trays, ATMs, and door handles, wash your hands or use hand sanitizer.

Limit the Spread of Infection

Fight viruses with the Curad Anti-Viral Face Mask

Most doctor’s offices now provide face masks in the patient waiting area, which should be donned by potentially infected visitors. If you own or manage a healthcare facility, keep an ample supply of anti-viral face masks on hand for the flu season. Nurses and doctors may also wish to put on face masks before treating potentially infected patients to reduce their risks of contracting the illness. Also, keep in mind the virus can be spread up to seven days before a person exhibits symptoms. Thus, it’s a good idea to avoid sharing straws, makeup products, and similar objects with others.

Keep Your Spaces Clean

Wipe away germs with CleanTex Phone Wipes

According to a Clorox survey, 41% of workers say they rarely – if ever – disinfect their desks. Your cubicle and similar personal spaces can harbor countless germs, so taking extra precautions to keep them clean during flu season is essential to your wellness. From your cubicle to your household, wipe down surface areas often to keep germs at bay. Keep office environments well-stocked with cleaning supplies which can be used safely on electronics like touch-screen computers and keyboards. Use CleanTex Phone Wipes for desk equipment and phones and use CleanTex Clean and Safe wipes or Purell Sanitizing Hand Wipes for your hands.

Cover Your Cough

If you do get the flu or feel like it could be coming on, be sure to cover your mouth when sneezing or coughing. Afterwards, clean your hands to prevent passing your germs onto any surface areas. The flu virus isn’t just spread by airborne respiratory droplets; it can also be passed by skin-to-skin contact and by touching a contaminated surface. Leave a germ-free surface by cleaning with disinfectant wipes.

Practice Healthy Habits

Eating a nutrient-rich diet is a great way to boost your body’s immunity, but many individuals still fall short in certain vitamins and minerals. Talk to your doctor about taking a multivitamin to stay as healthy as possible, and be sure to get plenty of sleep. If you do contract the flu, stay hydrated and seek medical attention if any symptoms become extreme.

Keep your office environment clean this flu season by stocking up on disinfecting wipes, sanitizers, anti-viral face masks and more through Harmony Business Supplies. We have everything you need to stop germs in their tracks. Visit our online storefront for a full list of products, or get in touch with a product specialist for assistance.