Using a Hg(II) sensor based on the aggregation of gold nanoparticles as a model system, we evaluated the performance of two portable low-cost devices that monitor the wavelength-ratiometric resonance Rayleigh scattering signal of the chemical sensor upon white-LED illumination. The first device uses...
This simple connection enables fast, low-cost sample preparation immediately prior to injection into an ICP-MS or other analytical instrument.doi:10.1016/j.aca.2020.08.049Hope LackeyDanny BottenusMartin LiezersSteve ShenAmanda LinesAnalytica Chimica Acta...
“research grade” qualified bioassay using industry standard Sciex API-4000 LC-MS/MS instrumentwithin one week(on average). We will then analyze your bioanalytical samples within3-5 business days.Compare our average turnaround time to that of any larger CRO (1-3 months) and you will clearly...
Medical device is defined as any instrument, apparatus, appliance, software, or material used, alone or in combination, in diagnosis, monitoring, prevention and treatment of diseases [71]. The necessary performance and general safety requirements of electrical medical devices, e.g. Medical Electrical...
in soil. The figures of merit of the method and non-spectral interfer- ences of the matrix were studied. The work is of significance for the an- alytical practice as it emphasizes the opportunity to make use of a non- expensive laboratory miniaturized instrument, easy to assemble and...
The leachate was collected by filtering the mixture with HPF (high-pressure filter, BLC-1, Beijing GuoHuan Institute of High-tech Automation, China) after 16 h standing. Then, the Cd concentration in the leachate was analyzed by ICP-MS (Wang et al., 2015). To investigate the geochem...
≤ 120° range simultaneously. For this diffractometer, the instrumental function was also defined using yttrium oxide (Y2O3) standard powder following the analytical procedure described in [7]. This instrument’s configuration is accompanied by the use of a modular sample holder (Figure 1) capable...
The pin from the MUX, which corresponds to a voltage measurement on the test unit (vessel), connects to the high-precision instrument amplifier AD620 from Analog Devices. The gain is set to approximate 1.5 and the output is then passed through 𝐶1C1, which allows only AC current, thus ...
Our dedicated in-house systems engineer team refurbishes, tests and services each instrument to ensure it meets OEM operating specifications. All of our equipment comes with up to a one-year warranty and LIFETIME support – one of the best guarantees in the business. Analyzers Autoclaves - ...
was adjusted to pH 2.0 with 0.1 M HCl using a Hannah instrument HI-901C1 potentiometric auto titrator, set to dose 0.3 mL HCl every 2 min for 30 min until pH equilibrium was reached. After equilibrium, we introduced 200 µL stomach crude enzyme extract prepared according to Yasumaru and...