Stainless Steel Kidney Trays: Sizes, Steel Grades, and Hospital Buying Guide

The Kidney Tray: A Simple Instrument That Does More Work Than People Realize

Kidney dishes are so ubiquitous in clinical environments that they are easy to overlook as a procurement consideration. They hold instruments on the sterile field. They catch irrigation fluid. They receive tissue specimens for pathology. They hold antiseptic for skin preparation. In a busy operating room, the same type of tray serves a dozen different purposes over the course of a day.

Yet not all kidney trays perform equally. The difference between a 0.7 mm thick, properly contoured kidney dish and a cheap stamped version that flexes under load, develops pits after ten autoclave cycles, and has rolled edges that retain moisture is apparent within the first three months of clinical use.

Fizza Surgical manufactures stainless steel kidney trays at our Sialkot facility, exporting to hospital procurement teams, surgical supply distributors, and medical holloware companies across more than 50 countries.

Kidney Tray Sizes: Standard Dimensions

Kidney trays are manufactured in a consistent range of sizes, though exact dimensions vary slightly by manufacturer. The most common sizes in clinical use are:

SizeApproximate DimensionsPrimary Use
Small250 mm x 125 mm x 40 mmDressings, specimen collection, outpatient procedures
Medium280 mm x 140 mm x 45 mmGeneral ward and OR use, irrigation fluid
Large320 mm x 160 mm x 50 mmOR sterile field, instrument holding during procedures
Extra Large380 mm x 185 mm x 55 mmLarge instrument sets, deep procedures, surgical drainage

Hospitals typically stock multiple sizes. The medium (280 mm) is the most ordered general-purpose size. The large is standard on OR sterile back tables for holding instruments during procedures.

316L vs 304 Stainless Steel: What Grade Should You Specify?

Two stainless steel grades dominate hospital holloware manufacturing:

304 Grade (18/8 Stainless)

18% chromium and 8% nickel. The standard grade for most general-purpose holloware. Excellent corrosion resistance under normal sterilization conditions, good surface finish, and cost-effective. Suitable for kidney trays, gallipots, and general surgical bowls used in standard steam autoclave cycles.

316L Grade (18/10 Stainless, Marine Grade)

18% chromium, 10% nickel, and 2% molybdenum. The molybdenum addition significantly improves resistance to chloride corrosion — the primary cause of pitting in hospital holloware exposed to saline, chlorine-containing disinfectants, and prolonged autoclaving. 316L is the correct specification for holloware used in high-frequency sterilization environments, in ICU settings where chlorine-based cleaning solutions are common, and for any application where corrosion durability is a priority over initial cost.

Fizza Surgical manufactures kidney trays in both 304 and 316L on request. We recommend specifying 316L for high-turnover OR and CSSD environments.

Edge Finishing and Capacity

A properly manufactured kidney tray has a smooth, rolled rim edge that is comfortable to handle and does not create sharp edges that can cut gloves or hands. The interior corners are smoothly radiused to prevent fluid and debris accumulation. The base should be flat and stable, not bowed — a bowed base causes the tray to rock and tip when placed on a flat surface under load.

Wall thickness matters for durability. Fizza Surgical kidney trays are manufactured to 0.7–0.8 mm wall thickness in standard 304 grade and 0.7 mm in 316L. Trays under 0.5 mm wall thickness deform under repeated steam sterilization and lose their shape within two years of regular use.

Autoclave Compatibility

All stainless steel kidney trays from Fizza Surgical withstand standard steam sterilization: 134°C porous load cycle, 3–4 bar pressure, unlimited cycles within normal clinical service. The instruments are not rated for chemical sterilization with hot formaldehyde gas (ETO is acceptable for cleaning, not recommended as primary sterilization for stainless holloware).

Ordering Kidney Trays at Scale

Hospital procurement teams ordering kidney trays in quantity should specify: size (dimensions in mm), steel grade (304 or 316L), wall thickness requirement, finish preference (satin or mirror polish), and quantity per shipment. CE marking and material compliance certificates are included with all Fizza Surgical holloware orders.

OEM orders (custom logos stamped or electroetched onto the tray) are available from 500 pieces minimum. Many European and North American distributors source kidney trays from Fizza Surgical and sell under their own labels.

Request a Kidney Tray Quotation

Contact Fizza Surgical for pricing on kidney trays in any size and grade. Sample pieces available before bulk orders.

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