2.2 Disinfection of Implements, Tools & Single-Use Items

The Disinfectant Standard for Nevada Nail Salons

Not every household cleaner qualifies as a salon disinfectant. NAC 644A.740 sets the Nevada rule, and it is more specific than the generic textbook version. In every cosmetological establishment or school of cosmetology, disinfectants must be available for immediate use at all times, and every instrument, implement, and other nonporous tool must be cleaned and disinfected before each use by:

1. Removing all hair and other adherent foreign material;
2. Washing thoroughly with soap and hot water;
3. Rinsing in clear hot water;
4. Drying thoroughly; and
5. Placing the tool in a covered container large enough for complete immersion, containing a disinfectant registered with the United States Environmental Protection Agency and other than alcohol, prepared and used exactly as the manufacturer's label instructs — including safety precautions, dilution, contact time, and disposal.

Read step 5 twice. Nevada bans alcohol as the immersion disinfectant, requires the container to be covered, and requires complete immersion. A jar of 70% isopropyl on the table is not compliant.

Reading a Disinfectant Label

A correct salon disinfectant label will show these four pathogen-kill claims:

• Bactericidal — kills bacteria
• Fungicidal — kills fungi
• Virucidal — kills viruses (often specifying HIV-1, hepatitis B, hepatitis C, or influenza)
• Pseudomonacidal — kills Pseudomonas aeruginosa, a tough bacterium that signals a high-level hospital disinfectant

A product labeled only “sanitizer” or “deodorizer” is not acceptable for implements. Quaternary ammonium compounds (“quats”) and phenolics are the common salon actives. Alcohol is expressly excluded by NAC 644A.740 as the immersion disinfectant for implements.

Mix, Contact Time, and Shelf Life — Follow the Label

Three label instructions fail candidates on the exam:

1. Dilution / mixing — concentrated quats must be diluted with water to the exact ratio on the label (often 1:128 or 1:256). Too concentrated can irritate skin; too dilute will not kill pathogens.
2. Contact time — the minutes the surface or implement must remain visibly wet with the solution. Common times range from 1 to 10 minutes; the exam answer is always “follow the manufacturer's label contact time,” not a memorized number.
3. Solution shelf life — NAC 644A.740 is explicit: disinfectant solutions must be made daily and disposed of at the end of the day, or immediately if visible debris is present. A cloudy or debris-filled solution is out of compliance, not merely weak.

Nevada adds three labeling and measuring rules that generate easy exam points:

• Disinfectant solutions must be legibly labeled with the name of the disinfectant and the dilution.
• If a concentrate must be diluted with water, measuring devices must be readily available and used to ensure an effective solution.
• The original container with the manufacturer's label must be available at all times in the establishment, and a concentrate transferred out of its original container must be legibly labeled with the name and use instructions.

Test point: the product label is the legal authority for contact time and dilution — do not invent contact-time numbers — but Nevada overlays its own daily-change, labeling, and measuring requirements on top of the label.

Multi-Use Implements vs. Single-Use Items

The single most tested distinction in this section is multi-use vs. single-use. Confusing the two is a critical violation because reusing a disposable item can transmit infection.

Multi-Use Implements (Clean, Then Disinfect, Then Store)

These are made of hard, nonporous metal or plastic that can withstand cleaning and disinfection:

• Nippers (cuticle nippers)
• Cuticle scissors and shears
• Cuticle pushers (metal)
• Nail clippers / toenail nippers
• Metal files (some)
• Tweezers
• Manicure bowls (if nonporous)
• Electric file bits (carbide or diamond — clean and disinfect; discard if cracked)

Procedure for each client:

1. Clean with soap and warm water to remove all visible debris; use a brush if needed.
2. Rinse and dry.
3. Immerse completely in an EPA-registered hospital disinfectant for the full label contact time (commonly 10 minutes for implements).
4. Remove with clean tongs or gloved hands.
5. Rinse if the label requires rinsing (quats often require a rinse before client contact).
6. Dry thoroughly.
7. Store in a clean, closed, labeled container (see below).

Single-Use (Disposable) Items — Discard After ONE Client

These are porous or made of material that cannot be properly cleaned and disinfected:

• Orangewood sticks and wooden pushers
• Emery boards (disposable cardboard)
• Nail files (cardboard/backed)
• Buffers (foam/chamois-backed, unless manufacturer-certified as disinfectable)
• Wooden spatulas and applicators
• Toe separators (foam or paper)
• Cotton, tissues, gauze
• Single-use nail strips and stencils
• Pedicure inserts that are disposable

The rule is absolute: if an item cannot be thoroughly cleaned and disinfected, it must be given to the client or thrown away after one use. “It looks clean” is never a reason to reuse a disposable item.

Nevada Defines "Single-Use Item" by Regulation — Files and Buffers Are on the List

There is no gray area in Nevada. NAC 644A.740(2) defines single-use items to include, without limitation:

buffers, cotton balls, cotton strips and swabs, disposable gloves, emery boards, nail files, neck and muslin strips, paraffin liners, makeup applicators, mascara applicators, pedicure slippers, sleeves and sanders for electric files, foam buffer blocks, cushioned nail files, paper, sandpaper, wooden spatulas, cotton pads, gauze pads and toe separators — or any other items made with paper, wood, foam, or any porous material.

Two operative rules follow: single-use items must not be used on more than one client and must be disposed of after use on a client, and all single-use items and other items that cannot be disinfected must be stored in closed containers at all times while not in use. NAC 644A.730(6) repeats the point for service delivery: single-use instruments and supplies — expressly including neck strips, nail files, and buffers — that contact a client and cannot subsequently be disinfected must be disposed of in a waste receptacle immediately following their use.

So in Nevada a nail file or buffer block is a disposable by regulation, regardless of what the manufacturer claims. Selling the client their own file to take home is fine; reusing one is a violation of a rule that NAC 644A.865 classifies as gross malpractice.

Storing Disinfected Implements

Once an implement is disinfected, how it is stored decides whether it stays disinfected. Nevada regulations require clean storage that protects from recontamination:

• NAC 644A.740(1)(c): all disinfected instruments, implements, and other tools that are not in use and not in the process of disinfection must be stored in a clean, dry, closed container, drawer, or storage unit that contains only disinfected tools.
• NAC 644A.740(1)(d): any tool dropped on the floor or otherwise made unsanitary must go into a separate labeled container for soiled articles only and must not be used until thoroughly cleaned and disinfected again. This rule is graded on the practical exam — if you drop an implement, you stop, bag it, sanitize your hands, and take a fresh one from your kit.
• NAC 644A.745: electrical instruments are disinfected per the manufacturer's instructions and may be stored on and covered with a clean towel or hung on a hook, but an electrical instrument with a cord may not be placed in a cabinet with disinfected nonelectrical instruments.
• Never store implements wet, and never store them soaking in disinfectant — contact time is a process, not a storage protocol.
• A UV box is not a substitute for EPA-registered immersion disinfection; it is a storage aid only.

Applying Creams, Lotions, and Powders Hygienically

Cross-contamination often happens at the lotion bottle, not the implement. The moment a technician's bare fingers touch a client's skin and then dip back into a shared container, the product is contaminated for every future client.

Correct Dispensing Methods (NAC 644A.755)

Nevada regulates this directly. In each establishment:

• Creams, lotions, cosmetics, and other preparations must be kept in closed and labeled containers at all times when not in use.
• Lotions or liquids used on a client must be poured into a single-use or disinfected container and applied with cotton or another applicator; that container must be labeled to disclose its contents.
• Creams or other semisolid substances must be dipped from the container with a single-use or disinfected instrument or spatula. Removing such substances with the fingers is prohibited.
• Creams, lotions, and preparations must be removed by means of cotton, gauze, facial tissue, or other single-use material.
• All bottles and containers must be distinctly and correctly labeled with their contents, and anything containing a poisonous substance must be distinctly marked as such.
• Supplies used for service to clients must not be stored in any restroom.
• Readily accessible safety data sheets for each product containing hazardous substances must be available to all licensees at all times.
• The use of powder puffs is prohibited, and face powder must be kept in a closed, labeled container.

Practical translation: pump bottles and single-use packets are the safest choices, a spatula is dipped once and discarded, and bare fingers never enter a product jar.

If you must apply product by hand, wear a single-use glove and dispense the portion onto a clean palette or the back of your gloved hand first.

A Realistic Exam Scenario

A typical scenario question: a tech finishes a manicure, rinses the nippers under water, and places them in a closed drawer labeled “clean.” What is wrong? Skipped step: the nippers were rinsed but never immersed in an EPA-registered hospital disinfectant for the required contact time, so they are not disinfected. Storing them in a “clean” drawer does not make them clean.

Takeaways for the Exam

• Disinfectant must carry bactericidal, fungicidal, virucidal, and pseudomonacidal claims and be EPA-registered.
• Cleaning always precedes disinfection; follow label dilution, contact time, and 24-hour solution change.
• Multi-use = metal/nonporous, clean + disinfect + store dry; single-use = porous, discard after one client.
• Disinfected implements are stored dry, closed, and labeled — never in disinfectant, never wet, never with dirty tools.
• Dispense lotions with a pump or single-use spatula; never double-dip.