Spatula, Plastic

Quick Answer: A plastic spatula is a laboratory spatula moulded entirely from plastic instead of metal. It is chosen when metal must not touch the sample, when a surface must not be scratched, or when a low-cost, lightweight tool is needed.

When Metal Is the Wrong Choice

Metal spatulas suit most solids, but not all. In trace-metal analysis, a steel blade can add the very elements being measured. Some substances corrode metal or react with it, iodine being a common example, and a metal tool can discolour or contaminate them. An all-plastic tool avoids both problems. It also will not scratch non-stick coatings, soft plastics or polished surfaces, and it is a safer choice around delicate glassware.

Plastic brings its own limits. Laboratory spatulas are made from several plastics, and each has different heat and solvent resistance: polypropylene generally tolerates many aqueous acids and alkalis, while polystyrene is attacked by many organic solvents. The plastic used for this spatula should be confirmed before it is used with solvents or heat. Plastic also builds up static charge, which can make fine, dry powders cling.

In pharmaceutics, non-metal spatulas are used for ingredients that should not touch steel, which is why they are often stocked beside the ointment spatula.

Care & Handling

• Check the plastic’s chemical resistance before using the spatula with organic solvents.
• Keep it away from Bunsen flames, hot plates and hot glassware.
• Wash with mild detergent; avoid abrasive pads that roughen the surface.
• Discard spatulas that are cracked, softened or stained, as they can hold residues.

Applications

• Weighing solids for trace-metal analysis
• Handling iodine and other substances that attack or are contaminated by metal
• Scraping samples from coated or soft plastic surfaces
• Food, soil or water testing where disposable tools are preferred

Specifications

Why Choose LabEquip

Analytical, environmental and pharmacy labs buy plastic spatulas for metal-free work, and schools use them as inexpensive class tools. LabEquip lists them in the General Lab Products range; confirm the plastic type and quantities through the contact page.

Frequently Asked Questions

Why use a plastic spatula instead of stainless steel?

To avoid metal contamination or reactions, for example in trace-metal analysis or when handling iodine, and to avoid scratching coated or soft surfaces.

Can this spatula be autoclaved?

It depends on the plastic. Polypropylene is generally autoclavable, while polystyrene is not. Confirm the plastic type of this spatula before autoclaving.

Is it resistant to organic solvents?

Resistance varies with the plastic. Polypropylene resists many solvents at room temperature, but aromatic and chlorinated solvents attack some plastics. Test or check compatibility first.

Why does fine powder cling to plastic?

Plastic builds up static charge, especially in dry air. Wiping with a damp cloth before use or using an antistatic device near the balance reduces clinging.

Can it be used to stir hot solutions?

Only if the plastic’s temperature limit allows it. Many plastics soften well below the boiling point of water, so use a glass rod for hot liquids.

Are plastic spatulas reusable?

Many are, if washed and dried after use. In microbiology or food testing, laboratories often treat them as single-use to avoid cross-contamination.

Last Updated: September 2026