Environmental Analysis & Electrochemistry


HPC Testing Platform Receives AFNOR NF Validation Certifi cation


EasyDisc YEATM from IDEXX, used for the enumeration of heterotrophic plate counts (HPC) at 22°C and 36°C in drinking water, has been granted the NF Validation by AFNOR Certification under the reference No 33/09 – 03/22.


The AFNOR Certification follows a study that was carried out by 14 independent expert laboratories. The performance of the EasyDisc method was judged equivalent to the standard method EN ISO 6222, when incubated at 22°C for 68 hours and when incubated at 36°C for 44 hours. Data from the study were then subjected to rigorous scrutiny by experts.


EasyDisc YEA offers an easy solution for HPC testing, with no agar preparation needed, and requires less than one minute of hands-on time to process a sample. Blue colonies reduce ambiguity of results, and colony counting is made easier by the integrated gridlines in the EasyDisc plate.


Proper use of HPC monitoring provides an insight into the effectiveness of ongoing supply chain quality and an indication of potential system failure, while warning of public health hazards.


EasyDisc is available in three different formulations to cover all HPC testing needs: PCA and YEA, which correlate with the pour plate method using plate count agar and yeast extract agar respectively for the testing of drinking and source water; and R2A that correlates with the pour plate method using Reasoner’s 2 agar for the testing of medical and/or pharmaceutical waters.


More information online: ilmt.co/PL/YQOE and ilmt.co/PL/MyMD 57851pr@reply-direct.com


Detect Mercury, Arsenic, and Selenium in Environmental and Food Samples


P S Analytical (PSA) provides niche analytical instruments for the determination of mercury, arsenic, selenium, antimony and bismuth in many sample matrices including environmental and food and beverage samples.


The presence of these toxic metals in their various forms is of real concern. Increasingly the determination of both total and speciated chemical forms is required and this requirement generates further analytical challenges of sensitivity, selectivity and freedom for interferences.


In addition to analytical considerations operation issues such as; ease of use, reliability and robustness as well as very affordable running costs are all important and are recognised hallmarks or the PSA brand.


Coupling Atomic Fluorescence Spectroscopy (AFS) with either cold vapour generation or hydride generation has been PSA’s core competency for over 30 years. With the addition of analyte separation capability which allows for speciation studies, PSA offers some powerful tools to help with these endeavours.


For example, the separation of; methyl mercury from inorganic mercury in water, shellfish, seaweed, dairy products, vegetables and grains; the determination inorganic arsenic from less toxic organo arsenic species in water, rice, seaweed are examples of routine applications developed for this growing area of concern.


The team is constantly developing new methods and applications to address market concerns and so if you have a sample you are interested to know more about with, PSA would love to hear from you. With literally thousands of systems in the field today, and support networks in Europe, USA and SE Asia, PSA offers the ideal package of performance, reliability and support. More information online: ilmt.co/PL/wJXR


55329pr@reply-direct.com


Precise and Cost-effective Water Quality Monitoring


The Ultrameter II 6PFCE provides a comprehensive suite of in-situ water quality analysis tools that are designed to replace more costly and less convenient laboratory equipment. A true, one-handed instrument, the 6PFCE delivers Conductivity, Resistivity, TDS, pH, ORP, Free Chlorine Equivalent (FCE™), and Temperature measurements quickly and easily with the press of a button.


Unlike other similar meters, the 6PFCE Conductivity/TDS measurements feature the ability to select from one of three pre-programmed solution models, KCl, NaCl, or Myron L’s own 442 Natural Water™ Standard, or to program a User solution mode based on a known solution yourself. The result is benchtop accuracy of plus or minus one percent of reading in a handheld instrument. Temperature compensation is automatic to 25°C or can be disabled by the user as required. Autoranging capabilities provide increased reading resolution across a broad range of applications.


pH readings are also temperature compensated, and you can choose to perform a 1-, 2-, or 3-point calibration depending on the range of samples measured to achieve plus or minus .01 pH accuracy. The pH sensor is of a proprietary construction and includes a large potassium chloride solution reservoir for long life. Myron L pH sensors are also user replaceable.


ORP measurements utilise a 99.9% pure platinum electrode and a reference junction that is shared with the pH sensor resulting in an accuracy of plus or minus one millivolt.


In addition, the 6PFCE features a groundbreaking new way to determine Free Available Chlorine based on a predictive ORP value. Empirical measurements of the chemical activity of a solution are made without the hassle and subjectivity of colorimetric and test-strip methods.


Calibration is simple to perform using up and down arrow keys and a digital interface. And the 6PFCE is IP67 dust-tight and waterproof, NEMA 6 submersible, and buoyant.


More information online: ilmt.co/PL/QBLR 57408pr@reply-direct.com


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