First Aid Only, Water vs. Class K Fire Extinguishers, and Latex Gloves in Food: A Safety Inspector's Checklist

The short version: a First Aid Only logo is a starting point, not a compliance certificate. Water fire extinguishers are for Class A fires only. Class K fire extinguishers are for commercial cooking oils, not home kitchens. And can you use latex gloves for food? Yes, but the more useful question is whether you should.

I'm a quality and brand compliance manager at First, a safety and PPE distributor. I review every incoming product before it reaches customers—roughly 200+ unique SKUs a year. In 2024, I rejected 12% of first deliveries for labeling errors, expired contents, missing components, or glove powder residue. Some issues were cosmetic. A few were dangerous enough to return the entire shipment.

First Aid Only: What the Logo Does and Doesn't Tell You

First Aid Only is a real brand. You've seen it on plastic cases, wall-mounted kits, and refill pouches. But over the last four years, I've learned not to trust the logo by itself. In March 2023, we received 500 units of a 50-person First Aid Only kit. The cartons looked clean. The logo looked right. Inside, the instant cold packs were expired, the tape was missing, and two bandage sizes didn't match the spec. The vendor said it was 'within industry standard.' It wasn't. We rejected the batch, and they redid it at their cost—but the delay cost us about $22,000 in expedited freight, overtime, and customer follow-ups.

That failure changed how I think about brand verification. A recognizable logo makes receiving staff less likely to open the box. The logo feels like proof. It isn't. The brand does its own quality checks, but it doesn't know what you ordered, when you ordered it, or what your workers need. That's on you.

A common distributor substitution makes this even trickier. If you order First Aid Only and receive a generic kit with supposedly identical contents, that's not automatically bad. But if your contract specified the brand, a substitute is a change order, not a courtesy. I've been the person who had to explain that to a customer after a last-minute delivery. It's not a conversation you want to have.

First Aid Only Instant Cold Packs: The Part Everyone Skips

A First Aid Only instant cold pack is one of the most common line items in a kit, and one of the most ignored. It's also the one I see fail most often. People assume it's a bag of ice. It isn't. It's a controlled chemical reaction. When you squeeze the pack, an inner bladder breaks and the chemicals mix. The reaction absorbs heat from the surroundings, which is why it gets cold without a freezer.

Some packs use ammonium nitrate; others use urea, depending on the SKU. Both work. Both have specific SDS requirements and disposal rules. I've tested these in my receiving area. Most activate within 10 to 30 seconds and stay cold for 20 to 30 minutes. But if a pack is expired, heat-damaged, or even just old, activation can be slow or incomplete. In 2022, we pulled 8,000 packs from a storage room after a temperature excursion. The outer pouches looked fine. The inner bladders had ruptured. The defect was invisible until someone squeezed.

So here's the boring but practical checklist:

• Check the expiration date on the pack itself, not just the carton.
• Squeeze one from each lot. If it doesn't get cold within 30 seconds, reject the lot.
• Keep the SDS accessible. Cold pack chemicals are not food, and accidental ingestion is a real scenario.
• If a pack is cracked, swollen, or leaking, don't cut it open. Dispose of it per local regulations.

Water Fire Extinguishers: Match the Fire, Not the Label

Water fire extinguishers—usually air-pressurized water, or APW—work by removing heat. That makes them a solid choice for Class A fires: wood, paper, cloth, ordinary trash. That's basically their only job. If you put water on a Class B flammable liquid or a Class C energized electrical fire, you can spread the fire or electrocute yourself.

I remember walking through a commercial kitchen with a new facility manager. He was proud that he'd installed water extinguishers along the cooking line. 'Everyone knows water puts out fire,' he said. I had to explain that water extinguishers near fryers are a hazard, not a safeguard. The Class K extinguisher was missing entirely.

When I compared a water extinguisher and a Class K extinguisher side by side, I finally understood why the class rating matters more than the size. A 2.5-gallon water extinguisher looks more impressive than a 6-liter Class K unit. But in a grease fire, 'impressive' doesn't extinguish anything. The smaller, correctly rated unit is the one that works. Under OSHA 29 CFR 1910.157(e)(2), if you have portable extinguishers in the workplace, you're responsible for monthly visual inspections and keeping them in a fully charged and operable condition. But the more important requirement is choosing the right class in the first place.

Class K Fire Extinguishers: Commercial Kitchens, Not Home Ovens

Class K extinguishers are designed for commercial cooking oils and fats. They use wet chemical agents that react with hot oil to form a foam-like blanket, which cuts off oxygen and cools the oil. That's why you'll see them in restaurant kitchens, especially near deep fryers and grill lines.

Class K is not the same as Class B. Class B covers flammable liquids generally—gasoline, solvents, paint thinner—but not necessarily the high-temperature vegetable oils in a fryer. Class K is specifically for those cooking oils. Some Class K units also carry a Class B:C rating, but the reverse isn't true. A standard BC dry chemical extinguisher can knock down a grease fire temporarily, but it doesn't cool the oil the way a wet chemical unit does. Re-ignition is much more likely.

This is one place where the industry has genuinely evolved. What was best practice in commercial kitchens in 2020 may not apply in 2025. NFPA 10 has increasingly emphasized matching extinguishers to the specific hazard, and Class K is now the baseline for commercial cooking. The fundamentals haven't changed—match the extinguisher to the fire—but the execution has.

Can You Use Latex Gloves for Food? Yes, But Ask a Better Question

Short answer: yes, the FDA Food Code does not ban latex gloves for food service. If you use single-use gloves, it says they must be used for one task and changed when contamination is likely. It doesn't set a material requirement. So latex gloves are technically 'allowed.'

But 'allowed' is a low bar. Latex proteins can trigger allergic reactions, and powdered latex gloves can carry those proteins into food. Many safety distributors, including us, have switched to nitrile for food handling because it offers similar dexterity without the latex allergen issue. This isn't a compliance move. It's risk management.

I used to assume that any disposable glove with 'foodservice' on the box was safe for food contact. Then I saw a case labeled 'general purpose' that didn't carry a food-contact declaration. The material might have been perfectly fine, but the labeling wasn't. Learned never to assume after that. If a glove box doesn't say it's safe for food, don't put that glove in the salad station.

If you're buying latex gloves for foodservice, look for powder-free, food-grade gloves with a food-contact statement on the box. Check your local health codes too: some jurisdictions have moved away from latex entirely, and your insurance company may have an opinion. And always keep nitrile as a backup for employees with sensitivities.

The Fine Print: When These Rules Don't Apply

Everything above is general guidance, not legal advice. Your state, city, or county health department may have stricter rules. Hospitals, labs, food processing plants, and hazmat facilities have additional requirements that sit outside a typical PPE checklist. Fire extinguisher requirements depend on your building code, hazard classification, insurance carrier, and local fire marshal. The only way to be sure is to ask your Authority Having Jurisdiction (AHJ).

I don't know your specific operation. What I do know is that verification is underrated. Open the next safety box that arrives. Check the logo, check the dates, check the extinguisher ratings, read the glove box. It takes a few minutes, and it's exactly the kind of quality work that never shows up in a sales brochure.