Ultrasonic Cleaning of Scuba Gear

Ultrasonic Cleaners for Scuba Gear Maintenance

Perfectly functioning valves and regulators are essential for reliable air supply to scuba diving enthusiasts. Fresh water rinsing scuba regulators after each dive is part of the ritual; ultrasonic cleaning of disassembled regulator components should be a part of any organization renting gear or offering scuba diving excursions.

A good example is Florida based All Star Liveaboards, offering scuba diving enthusiasts “the best in liveaboard scuba diving and snorkeling in the Caribbean.”  Living aboard the Aqua Cat or other company vessels participants enjoy  week long cruises  from Nassau, Bahamas, to the islands of the Exuma Sound.  Participants include experienced divers with their own or All Star’s rental gear and novices wishing to learn the sport from All Star’s certified on-board scuba instructors.… Read the rest

Ultrasonic Cleaners for Flammable Solvents

ultrasonic cleaning using flammable solvent

Ultrasonic cleaners are widely recognized as providing outstanding cleaning action thanks to the cavitation produced by the equipment’s generator powered ultrasonic transducers.  But when cleaning with flammable solvents it is imperative that explosion resistant ultrasonic cleaners are employed in the shop, and that the equipment be located in an area equipped with an adequate exhaust system to vent fumes to an exterior location.

Flammable solvents are often preferred for tough cleaning jobs such as degreasing and removing tenacious contaminants like paint and adhesive residues.  Special care must be exercised when cleaning with flammable solvents under any circumstance, but especially when using an ultrasonic cleaner to both speed the process and improve cleaning results.   Unless they are specially constructed, ultrasonic cleaners present two risks:  sparks from internal electronics igniting spilled solvents and fumes, and vapors from solvent evaporation creating a hazardous area in the vicinity of the unit.   … Read the rest

Essential Features for Scientific Refrigerators

Scientific Refrigerators from Norlake

Scientific refrigerators have essential design and performance features that support their ability to safely store temperature sensitive biologicals, pharmaceuticals and similar products under exacting conditions.  At Tovatech we suggest customers consider scientific refrigerators such as the Norlake Select series an investment to protect valuable and sometimes irreplaceable contents from temperature excursions that would render them useless.   

Ultrasonic Cleaning Preserves New and Old Vinyl Records

Ultrasonic Cleaning of Vinyl RecordsVinyl records, the 33-1/3 RPM LPs and 45 RPM (juke box) discs, first came on the market in 1948 and in the 1950s grew tremendously in popularity until the advent of CD recordings.  But then something strange happened. Sparked by music aficionados’ appreciation of the unique sound quality of vinyl vs. digital CDs and the ability of ultrasonic cleaning to preserve and restore these records, vinyl sales increased 32% to $416 million in 2015, a 28-year high according to the Recording Industry Association of America.

The resurgence of interest in vinyl recordings has led to a new service industry specializing in cleaning the discs to preserve their unique sound quality and minimize wear.  A leader in this service is Pure-Grooves, LLC based in the Chicago suburb of Berwyn, IL.  Company founder Vince Tornabene has developed a  vinyl record restoration service based on a dual-frequency, adjustable power Elma P60H ultrasonic cleaner … Read the rest

Selecting and Using Precision Scale Test Weights

Calibrating Scales with Test Weights

Weighing accuracy is a primary criterion for precision scales, analytical balances and moisture analyzers where readout (the smallest weight difference displayed) and linearity (the ± deviation from the actual weight) are governed by GLP, ISO and other standards.  Test weights have a critical role to play when scales  with capacities from milligrams to tons are not automatically internally (see below) calibrated . The type of calibration, whether internal or external, is indicated on scales’ spec sheets.

New E Plus Line of Elma Ultrasonic Cleaners Available from Tovatech

Elmasonic E Plus Ultrasonic Cleaner BrochureUpgraded E Plus Features Target Parts Cleaning and Laboratory Applications

Ultrasonic cleaning equipment distributor Tovatech announces the availability of the new Elmasonic E Plus line of 37 kHz benchtop ultrasonic cleaners in 9 stainless steel tank capacities from 1/4 to 7-½ gallons. Replacing the Elmasonic E line, the newly designed E Plus ultrasonic cleaner units deliver about 30% more ultrasonic cleaning and mixing power.

Microprocessor-controlled Power Tracking assures reproducible performance run-to-run.

Operator-activated Pulse produces intermittent bursts of high power intensity to remove stubborn contaminants, degas solvents and to mix, disperse and dissolve lab samples.  An automatic Sweep mode ensures even distribution of cleaning action throughout the ultrasonic bath.  The choice of Sweep and Pulse functions addresses the full range of ultrasonic unit applications in scientific and medical laboratories as well as industrial shops.… Read the rest

New Elma xtra ST Industrial Ultrasonic Cleaners Available

Elmasonic xtra ST Ultrasonic Cleaner BrochureNew 25/45 kHz Elma xtra ST Units feature dynamic sweep/pulse mode for enhanced cleaning action

Ultrasonic cleaning equipment distributor Tovatech announces the availability of the powerful new Elmasonic xtra ST line of dual-frequency 25/45 kHz industrial ultrasonic cleaners in 7 stainless steel tank capacities from 8 to 67 gallons. These rugged wheel-mounted ultrasonic cleaner units feature a sweep mode for uniform distribution of cleaning energy, a user-activated pulse mode for a 20% increase in cleaning performance, and a dynamic sweep/pulse function for enhanced cleaning action.

Tovatech director Dr. Robert Sandor says the new Elma xtra ST ultrasonic cleaner line is perfectly positioned to replace spray and solvent cleaning operations across a broad range of industrial cleaning requirements.  Typical applications range from removing stubborn contaminants such as lapping compounds, heavy grease and oil buildup at 25 kHz to the more gentle 45 kHz ultrasonic frequency for fine cleaning of parts with … Read the rest

How Scientific Refrigeration Equipment Works

Video on How Scientific Refrigeration Works

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Many of our posts on scientific refrigeration equipment focus on selecting correct scientific refrigerator and scientific freezer units, and the importance of temperature control, monitoring and alarming systems that protect valuable vaccines, biological specimens and similar temperature-sensitive materials.

It might be a stretch to liken laboratory,  pharmacy and scientific refrigeration equipment purchases with automobile purchases where the savvy buyer is interested in “what’s under the hood?”  Nevertheless we post this post on what’s “under the cabinet” of your scientific refrigerator or freezer.  Our point is to point out how these units protect your investment in their contents.

Your take-away is a better understanding about how refrigeration works, which type of lab refrigerator or freezer to buy, how to maintain it, and where to set it up to get the best performance. 

Critical Procedures to Preserve Valuable Biological Samples

Preservation of biological samples such as tissues, plasma and forensic and pathology specimens relies on maintaining proper storage temperatures and on the type of sample and analysis to be done. Sample temperatures must be monitored and facilities supported by backup systems and tracking. As per the FDA, frozen samples should be kept at –28 to –18 °C and refrigerated samples between –2 and –8 °C; ambient samples should be protected from heat and moisture.  Tovatech’s Dr. Bob Sandor authored an article on this critical topic in American Laboratory’s March 2017 print issue that can be accessed on the LabCompare website.

Guidelines to Selecting Ultrasonic Cleaning Solutions

Ultrasonic cleaning is widely accepted in pharmaceutical, healthcare, electronics, medical device manufacturing, and related industries where product cleanliness is critical during and following production cycles. Powerful but gentle scrubbing action of imploding cavitation bubbles in ultrasonic cleaners is unsurpassed in removing the most tenacious of contaminants. The availability of biodegradable water-based ultrasonic cleaning formulations both broadens the application of sonic cleaning energy and removes disposal concerns associated with earlier used formulations such as trichloroethylene and perchlorethylene.

Correct cleaning solution formulations, along with applicable pre- and post-cleaning procedures, are an important part of compliance with QC and QA standards.  Tovatech’s Bob Sandor writes about this in  the February 1, 2017, issue of Controlled Environments.Read the rest