Author Archives: Bob Sandor

About Bob Sandor

Bob began working as a chemist in 1987 and remains a science geek to this day. After his PhD he worked on the bench in materials and inorganic chemistry for 10 years. He then took on a love for marketing and sales. He combined his passion for science and business and took entrapreneur general management positions in large corporations like Hoecsht Celanese now Sanofi Aventis, Bel-Art and Smiths Detection. There he learned what it would take to run a business and finally Tovatech was co-founded in 2006. Bob’s hobbies include playing, listening and composing music, skiing, working out, the internet and all things science.

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

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

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

Visit Our Learning Center

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

Selecting Scientific Refrigeration Equipment

Selecting Scientific Refrigeration Equipment

Scientific refrigeration equipment includes refrigerators and freezers used to store vaccines, pharmaceuticals, biological samples and similar temperature-sensitive products and specimens for healthcare, R&D and related applications.  Scientific refrigerators and freezers have critical performance requirements generally unmet by residential and commercial refrigeration systems.  For this reason they are highly recommended to protect contents that lose potency or are otherwise compromised by what are called temperature excursions above or below recommended storage settings. Therefore, selecting scientific refrigeration equipment for your needs is key.

Correct storage temperatures are usually recommended by professional or government organizations.  The CDC, for example, recommends in its 2016 Vaccine Storage and Handling Toolkit that frozen vaccines be stored between -50⁰ and -15⁰C (-58⁰ and + 5⁰F); refrigerated vaccines should be stored at 2⁰ and 8⁰C (36⁰ and 46⁰ F).  Vaccine manufacturers indicate correct storage temperatures that should apply along what is called the “cold chain” extending from the … Read the rest

Simplified Validation of HPLC Pump Systems

Consistent and accurate performance is an absolute necessity to meet U.S. Food and Drug Administration (FDA) and other regulations regarding installation qualification (IQ), operational qualification (OQ) and performance qualification (PQ) of equipment used in the pharmaceutical and biopharmaceutical industries. An example is high-performance liquid chromatography (HPLC) pump systems used to identify analytes. The process demands accurate, reproducible column retention time as an analyte is pumped through the HPLC system.

Preventive maintenance is certainly important. In addition, regularly checking and confirming pump flow rate accuracy must be undertaken by periodic performance verification of the HPLC system.  Learn why the FlowCal 5000 digital liquid flowmeter simplifies what otherwise is a complex, time consuming operation.  Check out Bob Sandor’s article in the December 12, 2016, issue of Flow Control magazine.