Explosion Proof Ultrasonic Cleaner Options

Explosion Proof Ultrasonic Cleaner Options

Explosion-proof ultrasonic cleaners must be used when cleaning tasks call for the use of volatile solvents to achieve the desired results.  See examples below.  When low flash point flammable solvents are involved in an ultrasonic cleaning operation, a number of precautions are called for in addition to using an explosion-proof ultrasonic cleaner.  This is because using these solvents creates what the NEC and NFPA term a hazardous location.

A flash point is the temperature at which a particular organic compound gives off sufficient vapor to ignite in air when given an ignition source.  In view of this, selection of an ultrasonic cleaner must take into account that not only do volatile solvents evaporate, but the heat generated by the ultrasonic cleaning process accelerates solvent evaporation and vapor generation.… Read the rest

What Is A Moisture Analyzer and How Does It Work?

What is a moisture analyzer hero image.

Moisture analyzers are precision instruments providing documentable data on moisture content, or the percentage of moisture in a product. 

Examples of incorrect moisture content include soggy potato chips and sugar that lumps up in the bowl, and dried out cookies. 

While these examples result from moisture in the atmosphere affecting product quality, moisture content is highly critical when manufacturing and processing a seemingly endless variety of products.

It is in the manufacturing of products that moisture content standards apply.  In the sugar example cited above, moisture content according to the EU sugar policy may be a maximum of 0.06%

Moisture content standards apply to virtually any product but first you should understand that there are different types of moisture.  It can be found  on the surface, in pores or capillaries, and chemically bonded.… Read the rest

Ultrasonic Cleaner Frequency and Power

Ultrasonic Cleaner Frequency and Power Header
TI-H Ultrasonic Cleaner and Control Panel
Elma TI-H cleaners have dual frequency and adjustable power features

Selecting an ultrasonic cleaner for any cleaning and sample preparation operation requires careful consideration of many factors before making a purchasing decision.  We offer useful guidelines in our post How to Pick the Best Ultrasonic Cleaner.  This post focuses on two points in particular, frequency and power. Ultrasonic frequency is relatively easy to understand; understanding power is a bit more complicated.  So let’s begin.

How to Specify Ultrasonic Frequency

Frequency is measured in thousands of cycles per second (kilohertz or kHz). 

These frequencies are generated by transducers most commonly affixed to the bottom of the cleaning tank.  Some ultrasonic units have transducers bonded to tank sides; others may have immersible transducers.

Wherever they are placed ultrasonic transducers are excited by the unit’s ultrasonic generator to produce millions of microscopic vacuum bubbles in the solution that implode on contact … Read the rest

How to Safely Use a Solvent Cleaner

As described in Chapter 3 of the Adhesives Technology Handbook*, “solvent cleaning is the process of removing soil from a surface with an organic solvent without physically or chemically altering the material being cleaned. This includes methods such as vapor degreasing, spraying, immersion, and mechanical or ultrasonic scrubbing.” This post describes how to safely use a volatile solvent cleaner with a low flash point.

Solvent Cleaner Flash Points

Solvent cleaners have different flashpoints. In chemistry, the flash point of a volatile material is the lowest temperature at which its vapors ignite if given an ignition source. In brief, the lower the flashpoint the more flammable they are. This is important when using a solvent cleaner.

The American Chemical Society publishes a table of common organic solvents that includes flash points. Examples of low flash point volatile solvents are 1-propanol at 59⁰F (15⁰C), acetone at -4⁰F (-20⁰C)  and toluene … Read the rest

How to Maintain Firearms with an Ultrasonic Gun Cleaner

Gun Cleaning Solvent

Investments in firearms by individuals and organizations can be substantial.  This post provides a  comprehensive tutorial on how to maintain firearms with an ultrasonic cleaner.  It offers you guidance on when and how to use gun cleaning solvents but focuses more on why an ultrasonic gun cleaner is a wise investment when maintaining firearms.

 Gun Cleaning Solvents Described

Firearm owners may be aware of many gun cleaning “solvents” available on the market, but just what is a solvent?  According to an article in Science Direct, a solvent can be defined as “a liquid that has the ability to dissolve, suspend, or extract other materials, without chemical change to the material or solvent.”

When it comes to maintaining firearms, gun cleaning solvents are generally employed just after a session on the shooting range or in the field.  Savvy firearm owners recognize the importance of cleaning and lubricating their weapon immediately … Read the rest

Avoid Product Damage by Ultrasonic Waves

Avoid Product Damage by Ultrasonic Waves

The worldwide acceptance of ultrasonic cleaning is confirmed by a MarketandMarkets report stating that it is expected to grow from USD 1.6 billion in 2019 to USD 2.2 billion by 2024, at a CAGR of 6.5% during the forecast period. That report describes reasons driving the growth rate while this post provides important tips on avoiding product damage by ultrasonic waves.

Ultrasonic Waves Described

Ultrasonic waves is another way of describing what is called cavitation action in an ultrasonic cleaner tank.   Cavitation action results from the violent implosion of millions of microscopic bubbles every second.

These implosions create a temperature of 5000˚C (>9000˚F) and a jet of plasma impacting the objects being cleaned.  It is cavitation action by ultrasonic waves that quickly strips away dirt and other contaminants from parts being cleaned.

Note that this action is exceedingly fast meaning it does not damage the parts.  But over time it … Read the rest

Solvent Ultrasonic Cleaning Helps Porvair Filtration Meet Customer Specs

SOL XP at Porvair Filtration

An explosion-proof ultrasonic cleaning system satisfies customers’ preferences for flammable solvents employed during initial cleaning processes for new and reconditioned stainless-steel filters, reports Jeff Bernier, Quality Manager at Porvair Filtration Group in Caribou, ME.

“Solvent ultrasonic cleaning falls into our passivation cycle as a means of improving the corrosion resistance of our 316L stainless steel filters by removing ferrous contaminants like free iron from surfaces, and restoring them to their original corrosion specifications,” Mr. Bernier explains, adding “many of our chromatography customers expect it.”

Solvent Ultrasonic Cleaning Replaces Aqueous Solutions

“Our explosion-proof ultrasonic cleaner allows us to safely use flammable solvents versus previously employed non-flammable aqueous solutions for initial cleaning,” Mr. Bernier says. 

“Grade A isopropanol alcohol and pharmaceutical grade acetone are the preferred solvents.  However, they require specially designed ultrasonic cleaners as well as compliance with strict safety standards.

“These include the National Electric

Read the rest

How to Use Industrial Ultrasonic Cleaners for Heavy Parts Degreasing?

A Tova Pro industrial ultrasonic cleaner
A SHIRACLEAN industrial ultrasonic cleaner

Heavy parts degreasing engines and other heavy, complex machinery components can be accomplished quickly and effectively by cavitation action in industrial ultrasonic cleaners. This post provides guidance on the benefits of ultrasonic cleaning, how to use an industrial ultrasonic cleaner, and how to get the best performance from your industrial ultrasonic cleaning equipment.

But first….

Why Use an Industrial Ultrasonic Cleaner?

Cleaning and degreasing heavy parts can be accomplished several ways. Commonly used options include high-pressure steam cleaning and degreasing, solvent-based wash tanks and high-pressure sprays. 

Common disadvantages of these options in addition to being time-consuming is that they are unable to penetrate and remove grease and other contaminants lodged in cracks, crevices and blind holes found in complex-shaped industrial parts.

Yet another disadvantage is that solvent-based wash tanks and sprays may introduce environmental concerns both in terms of use and solvent disposal.

In contrast…

As … Read the rest

How to Pick the Best Ultrasonic Cleaner

How to Pick the Best Ultrasonic Cleaner:

Selecting the best ultrasonic cleaner for your job should involve the same careful thought processes you’d go through when making other important purchasing decisions – such as an automobile or computer. What features are important to you?  Balancing “must have” with “nice to have” applies to any significant purchase. 

This post provides 10 tips on how to select the best ultrasonic cleaner by explaining features that may (or may not) be useful to your particular circumstances. It covers:

When you arm yourself with answers to these points you are well on the way … Read the rest

Digital HPLC Flowmeters – An Overview

What you’ll learn in this digital HPLC flowmeters overview:

Flow meters come in many sizes and find application in a wide range of industries.  As examples they meter gasoline pumped into your car and fuel oil into your heating system’s tank.  But instead of metering in gallons (for example) digital HPLC Flowmeters measure small flow rates such as 0.05 to 25 milliliters (mL) per minute.  This post provides an overview of lightweight, portable, and exceedingly accurate digital High Performance Liquid Chromatography (HPLC) flowmeters.

What HPLC Flow Meters Do

Among functions performed by HPLC are included checks for purity, monitoring changes in pharmaceutical intermediates during chemical synthesis scale-up, stability and dissolution tests, and performing ongoing quality control procedures.… Read the rest