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home Best Technology / Passivation Equipment & Ultrasonic Passivation Systems for Stainless Steel with Nitric / Citric Acid / Benchtop Ultrasonic Stainless Steel Passivation Equipment

Benchtop Ultrasonic Stainless Steel Passivation Equipment

  • System Description
  • Common Applications
  • Common Configurations

Benchtop passivation systems deliver high-performance parts cleaning, rinsing, passivation and drying, in units that fit on a tabletop.

All-in-One Benchtop Passivation Equipment

All-in-one passivation systems offer the convenience and efficiency of combining the washing, rinsing, passivation and drying into a single, unified piece of equipment. The system houses heated cleaning solution, cascading rinse water, citric or nitric acid passivation solution, a second cascading rinse, and a final hot-air drying step.

Tank capacity ranges from 1.25 to 3.5 gallons, with custom sizing available. These systems feature four ultrasonic chambers, plus a hot-air parts dryer.

1.25-Gallon 386P Benchtop Ultrasonic Stainless Steel Passivation Machine

Small Stainless Passivation Machine

The Model 386P is a 5-quart stainless passivation machine that is designed for low volumes of small parts or for prototyping environments.

3.5-Gallon 782P Benchtop Ultrasonic Stainless Steel Passivation Equipment

Tabletop Ultrasonic Stainless Steel Passivation Equipment
The Model 782P is a 3.5-gallon stainless passivation machine. Like the 386P, the process moves from left to right. Parts are cleaned, rinsed, passivated, rinsed, and then dried. The clean and passivation tanks can be optionally equipped with pump filter systems which provide 5-micron filtration of the cleaning and passivation solution.

Each tank has its own digital timer. Heater options include an internal or external mount for the thermostat, with temperature ranges from 85 – 180 °F.

The ultrasonic tanks use self-tuning ultrasonic generators that output square-wave sonic energy at a primary frequency of 38 kHz. (Higher-frequency 80 kHz ultrasonic generators are also available.)

The ultrasonic rinse system drives the drag-out chemistry to the surface of the rinse tank. Water flowing in from the bottom pushes the chemistry to an overflow weir, which drains through a standpipe.

Flowing Rinse for Benchtop Passivation Equipment

Flowing rinse diagram for benchtop passivation equipment

The hot-air dryer in a benchtop passivation system uses a combination of high heat and high air flow to dry parts. The thermostatically controlled temperature can be set between 140 – 180 °F.

Larger Tabletop Passivation Equipment

When you need larger tank capacity in a benchtop passivation system, look to Best Technology for multiple individual tanks. In systems like this, each process step (wash, rinse, passivate, etc.) is a separate tabletop tank. Combined together, 4 tabletop tanks and a standalone hot-air dryer form an effective passivation line.

Tank capacity for individual benchtop ultrasonic tanks ranges from 5 to 29 gallons per tank, with custom sizing available.

9-Gallon 188P Benchtop Ultrasonic Stainless Steel Passivation System

Manual Ultrasonic Citric Acid Passivation System
The Model 188P is a 9-gallon passivation line with 4 ultrasonic tanks and a hot-air dryer. This benchtop passivation system includes the following process steps:

  • Ultrasonic Parts Cleaning
  • Ultrasonic Rinsing
  • Passivation
  • Ultrasonic Rinsing
  • Heated-Air Drying

Standalone Passivation Equipment

Our all-in-one ultrasonic passivation systems are also available as standalone console units. Check out our passivation wet benches to see our full range of integrated standalone passivation systems.

Ultrasonic Passivation Console

Ultrasonic Passivation Console / Wet Bench
For greater convenience, our automated passivation equipment moves fluids rather than baskets of parts, freeing up the operator for other tasks. The operator simply puts in dirty, dry parts, hits start and returns to cleaned, passivated and dry parts.

Automated Passivation Equipment

Ultrasonic Automated Passivation Equipment

Common Applications for Stainless Steel Passivation Equipment

  • Medical device stainless steel parts cleaning and passivation
  • Aerospace parts cleaning and passivation
  • Nitric acid passivation type 2, 3, 4 per ASTM A967
  • Citric acid passivation type 1, 2, 3, 4, & 5 per ASTM A967 using CitriSurf® by Stellar Solutions
  • General washing and passivating for maintenance, manufacturing, rework and/or remanufacturing.

Common Configurations

We can easily make any bench top passivation tank size required for your application with little to no additional cost for custom size pricing. Below are a few common configurations for benchtop passivation machines.

Model Series Liquid Capacity
(gallon)
Inside Working Zones
(l x w x h)
386P 1.25 9.5″ x 5.5″ x 6″
782P 3.5 12″ x 10″ x 8″
499P 5 15″ x 10″ x 8″
598P 7.5 36″ x 8″ x 6″
188P 9 18″ x 12″ x 10″
487P 12 24″ x 12″ x 10″
300P 15 24″ x 24″ x 6″
592P 18 24″ x 14″ x 12″
1001P 26 25″ x 18″ x 14″
29P 29 36″ x 14″ x 14″

Start your benchtop passivation project now

Contact a passivation expert at Best Technology today to start designing your benchtop passivation system.

Latest News & Products from Best Technology

Semi-Automated Inline Citric Passivation Solution with Data Tracking

For one medical device manufacturer, the design of a citric passivation solution faced two major challenges: The manufacturing process required performing a water-break test after cleaning parts, before proceeding to passivation. This meant that they could not use a fully automated passivation solution. The system had to have data tracking for quality control purposes. Semi-Automated […]

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  • Industrial Parts Washers
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      • Pipe Washing Equipment
      • Machine Shop Parts Washer for True Oil
      • Automotive Parts Washer System
  • Ultrasonic Cleaning Systems
    • Product Information
      • How Clean is Clean?
      • How Do Ultrasonic Cleaners Work?
    • Products
      • Ultrasonic Benchtop Parts Cleaner
      • Benchtop Ultrasonic Parts Cleaning Multi-Tank Systems
      • Ultrasonic Cleaning Consoles
      • Automated Ultrasonic Parts Cleaning Equipment Wash-Rinse-Dry
      • Large Ultrasonic Cleaner with Agitated Immersion
      • Immersible Ultrasonic Transducers
      • Vapor Degreasers
    • Case Studies
      • Machine Shop Parts Washer for Swiss and CNC Precision Parts
      • Applicable Articles
  • Passivation Equipment
    • Product Information
      • What is Passivation? How Does It Work?
      • Nitric vs. Citric Acid Passivation
      • CitriSurf – Citric Acid Passivation
    • Products
      • Benchtop Ultrasonic Passivation Equipment
      • Passivation Wet Bench for Citric / Nitric Acid
      • Ultrasonic Automated Passivation Equipment
      • Agitated Immersion Multi-Tank Passivation Systems
    • Case Studies
      • Automated Ultrasonic Passivation System for Medical Device Parts
      • Cleanroom Space Saving Automated Passivation System
      • Heated Polypropylene Acid Passivation and Rinse Tanks
      • Applicable Articles
  • Electropolishing Equipment
    • Product Information
      • What is Electropolishing? How Does Electropolishing Work?
      • Electropolishing Cycle and Current Calculator
      • What is Dry Electropolishing? How Does It Work?
      • Passivation vs. Electropolishing
    • Products
      • Table Top Electropolishing Equipment & Electropolishing Machines
      • Electropolishing Wet Benches
      • Large Scale Part Electropolishing Systems
      • Dry Electropolishing Machines
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      • EP System – Open Top Wet Bench with Spray Rinse
  • Surface Finishing Systems
    • Alodine Lines
      • What is Alodine / Chem film / Chromate Conversion Coating?
      • Alodine Chem Film Tank Line
      • Hex Chrome Phase Out and Alternatives for Conversion Coating
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      • Centrifugal Barrel Finishing Machines
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      • Cascade Overflow Rinse Tanks
      • Quick Dump Rinse Tank
    • Case Studies
      • Semiconductor Chemical Processing Wet Bench and Fume Hood
  • Specialty & Custom Industrial Process Systems
    • Automated Chemical Neutralization Tank Cart
    • Vapor and Dryfilm PTFE Coating Systems
    • Heated Hot Air Parts Dryer
    • Solvent Recovery Equipment
  • Solvents, Fluids & Chemistries for Precision Cleaning
    • Product Information
      • Why Use a Parts Cleaning Solvent?
      • Solvent Cleaning with 3M Novec Engineered Fluids
      • Thermal Management / Heat Transfer with 3M Fluorinert and Novec Fluids
    • Products
      • 3M Novec Engineered Fluids, Fluorinert Liquids, Solvents & Chemicals
      • Aqueous Cleaning Chemistries
    • Solvent Phase-outs
      • 3M™ Novec™ HFE Engineered Fluids Replacement and PFAS Phase Out
      • nPB Replacement
      • AK225 HCFC-225 Phase Out and Replacement with 3M Novec HFE Engineered Fluids
    • Case Studies
      • 3M Novec 72DA 73DE Solvent Vapor Degreaser For Medical Device Instruments
  • Process Validation Templates
  • Equipment Financing

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