8 Durable flow-through pH probe Inlet solvent filters maximise efficiency and minimise waste


In the world of analytical chemistry, precision and efficiency are paramount. Microsolv’s Last Drop Mobile Phase Inlet Solvent Filters are for laboratories seeking to optimise solvent usage and protect valuable instrumentation.


These filters are designed to draw nearly every drop of solvent from the bottom of your reservoir, significantly reducing waste and ensuring consistent mobile phase delivery. Unlike traditional filters that leave behind unusable solvent.


Biotech Fluidics introduces the mikron 91, a compact and durable inline pH probe designed for analytical and preparative chromatography, as well as continuous bioprocessing applications.


This advanced flow-through sensor provides precise, temperature-compensated pH measurements of liquids passing through its two available flow cell designs. Both the analytical and preparative mikron 91 variants support flow rates up to 1,000 ml/min, maintaining back pressure below 1 bar (14.5 psi). Easy access to the fluid path simplifies calibration, ensuring minimal disruption during maintenance.


Measuring just 32 mm (1.25”) in diameter and 115 mm (4.5”) in length, the mikron 91 fits seamlessly into a wide range of process setups.


The probe houses a fully temperature-compensated pH meter featuring a durable ISFET measuring electrode alongside either a KCl or Ag/AgCl reference electrode. This combination guarantees reliable, accurate pH readings under varied operating conditions.


Constructed with a biocompatible measuring cell, the mikron 91 is certified for use in USP Class VI cleanroom environments, making it suitable for stringent pharmaceutical and biotech processes.


Designed to boost operational efficiency, the probe stores key data including calibration history, electrode operating times, and exposure durations across different pH ranges. This enables predictive maintenance, helping to reduce downtime and control costs. Maintenance of the mikron 91 is straightforward, quick, and economical.


Connectivity is streamlined via a single USB-C port that supplies both power and communication. Compatible drivers are available for leading chromatography software, with an open protocol option for custom integration. The mikron 91 complies with international standards and carries CE marking.


More information online: ilmt.co/PL/2qN6 65501pr@reply-direct.com


What sets these filters apart is their dual material options: passivated stainless steel for robust filtration and PTFE for chemically inert applications. The PTFE version even provides a visual cue for replacement, turning cloudy when clogged—an elegant solution for proactive maintenance.


Whether you’re running HPLC, UHPLC, or LCMS systems, Microsolv’s Last Drop filters help protect your columns and instruments from particulate contamination while maximising solvent efficiency. This not only saves money but also supports greener lab practices by reducing chemical waste. Upgrade your lab’s performance today—because every drop counts.


For a deeper dive into the product line, visit the website. More information online: ilmt.co/PL/MwxD and ilmt.co/PL/A3dL


65252pr@reply-direct.com Micro spargers enhance bioreactor performance


Biotech Fluidics has introduced a line of advanced micro spargers designed to improve gas transfer and mass transfer efficiency (kLa) in bioreactors, helping laboratories and process developers achieve higher yields with lower gas consumption.


Micro spargers work by dispersing gases such as air, oxygen, or carbon dioxide into liquids through a fine network of pores, creating a stream of exceptionally small bubbles. This increases the gas–liquid contact area, resulting in more efficient aeration and faster mass transfer - key factors for optimising fermentation and cell culture processes.


Developed in collaboration with Mott Corporation, Biotech Fluidics’ micro spargers deliver substantial performance gains, optimising mass transfer rates by 100–400% compared with standard drilled-pipe or dip-tube designs. This improvement supports stronger cell growth, more effective gas dissolution, and better mixing efficiency.


The range includes porous metal sparger tips for both benchtop and pilot-scale reactors, available in media grades from 2 µm to 15 µm. Each design can be tailored to match the bubble size and gas–liquid


dynamics required for a specific medium or organism, ensuring reliable, reproducible performance in any bioreactor setup. More information online: ilmt.co/PL/qB4b


65966pr@reply-direct.com Advanced temperature stability for HPLC columns


Torrey Pines Scientific has introduced the EchoTherm™ HPLC Column Oven Model CO20, designed to deliver precise thermal stability for high-performance liquid chromatography applications. Covering a range from ambient to 90°C, the CO20 allows setpoints in 0.1°C increments and maintains accuracy within ±0.1°C. A front- panel stability indicator ensures users know when the chamber is within ±0.2°C of the target temperature.


Chromatography consumables


Following the acquisition of Stratlab in 2021, Atom Scientific has a comprehensive range of consumables for chromatography, to offer alongside their high purity solvents.


Starting with auto


sampler vials, manufactured in Europe from high quality glass, available in Clear or Amber and with Screw Neck, Snap Necks and Crimp Necks and used in conjunction with a comprehensive range of caps for each type, manufactured in the USA by one of the world’s most reputable companies, the range offers quality yet cost- effective solutions to your laboratory.


Atom also offers an extensive range of syringes, syringe needles and syringe filters to meet any requirements, all from leading manufacturers and stocked in Manchester for simple and easy shipment when you need it.


More information online:


ilmt.co/PL/5q1b and ilmt.co/PL/JQOL 59726pr@reply-direct.com


The oven accommodates columns up to 30 cm in length with diameters of ¼″ or 3/8″, secured in mounting clips that can be removed to fit larger columns when required. Practical features include a clear digital display of both set and actual temperatures, an injection counter, a 30-day timer with alarm, and a programmable Auto-Off function. An optional stand is also available.


Powered by 12 V DC, the unit comes with a universal bench-top power supply, a region-specific 3-wire AC line cord, counter cable, and is backed by a 12-month warranty. The CO20 is fully ETL, CSA, and CE compliant, ensuring safe use in laboratories worldwide.


More information online: ilmt.co/PL/Kw1j 65703pr@reply-direct.com ABV testing by GC for alcohol free beers and ciders


If you brew alcohol-free or low-alcohol beer and cider, it is essential that the alcohol content is correct. If the amount of ethanol present is greater than expected, even by a fraction, and you could face re-labelling, or a product that can’t be sold. A hydrometer is commonly used to check ABV values; however, as this method infers alcohol content from the density of the beer, residual sugars, sweeteners, acids, and CO₂ in alcohol-free beer and cider can overwhelm the tiny density change from ethanol, resulting in inaccurate readings near zero. Another option is to send a sample to an external contract laboratory, but this can be time-consuming and costly if you need to run samples frequently.


That’s why many small breweries are now moving to test %ABV themselves in-house using gas


chromatography. This doesn’t require massive amounts of prior experience and a huge lab setup. With a compact GC that’s simple to use and priced for a small team.


The Ellutia 200 Series GC is an ideal fit for this application. Its compact size and lower cost make it ideal for breweries looking to take the next step in improving their Quality control. The application itself is a simple process. This short video shows the whole method, start to finish: ilmt.co/PL/9OWw


If you would like to learn more, please contact Ellutia about how this could help your business. More information online: ilmt.co/PL/ko4q


65950pr@reply-direct.com


INTERNATIONAL LABMATE - NOVEMBER 2025


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