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Laboratory Equipment Blog

  1. Get a Clean Consistent Cut Every Time with Biopsy Punches
    August 22, 2018
    Clean, Consistent Cut Every Time When you need to quickly take minimally invasive, small samples, the biopsy punch is an easy choice. The biopsy punch is a hand held, pencil-shaped instrument with a slender, pencil-like body. It is lightweight with a hollow, circular, stainless steel, cutting tip. In 1887 Edward Lawrence Keyes, the first president of the American Association of Genitourinary Surgeons, was the first doctor who documented the importance of using the biopsy punch for dermatological diagnostics. He observed that the skin tissue samples can be obtained without complications, minimal bleeding and no need for suturing. Uses for Biopsy Punches Punches are not solely used in dermatology. Biopsy punches are also designed for therapeutics
  2. How Do I Select Appropriate Surgical Instruments for My Application?
    March 13, 2018
    When you are selecting surgical instruments for a procedure, here are a few key points to consider What procedure are you performing? Published research papers usually indicate which instruments other researchers have used for similar procedures. The correct surgical instrument for a particular procedure makes a difference on the outcome of that technique. What is the size of your subject? An instrument that is perfect for a 200­–300 g rat (about 22–25 cm long) may not be the best choice for a neo-natal mouse of about 15 g (about 1–2.5 cm long). How often will the instrument be used? If you perform more than 100 cuts per day, a pair of titanium scissors or a pair of scissors with tungsten carbide inserts would be worth considering. They stay sharp longer.
  3. Replacing the Gasket in a Nanoliter2010
    February 13, 2018
    In this video you'll see how to replace the gasket in a Nanoliter2010.    More Info If you have questions, contact us at 866.606.1974 (US Toll Free) or at wpi@wpiinc.com. To request a formal quote, please email us at quotes@wpiinc.com.
  4. Absorbance Detection
    June 27, 2017
    Absorption of light correlates to the energy of a photon that is taken-up by electrons of the substance atom. The electromagnetic energy is transformed into internal energy of the absorbent substance. The absorbance of a substance quantifies how much of the incident light is absorbed by it (instead of being reflected or refracted). Precise measurements of the absorbance at many wavelengths allow the identification of a substance via absorption spectroscopy, where a sample is illuminated from one side, and the intensity of the light that exits from the sample in every direction is measured (see Fig. 1). A few examples of absorption are ultraviolet–visible (UV-Vis) spectroscopy or infrared (IR) spectroscopy.
  5. Using the Biofluorometer with Muscle Physiology Research systems
    June 27, 2017
    The use of fluorescence for sensing and imaging of the cellular signaling pathways has emerged as an indispensable tool in modern physiology, providing dynamic information of quantity and localization of the molecules of interest. Using appropriate indicator dyes, molecules alter their fluorescent characteristics in response to ion binding or membrane integration, so that the optical signal from the indicator can be measured to monitor the amplitude and the time course of various metal ions like Na+, K+, Mg2+ and Ca2+, as well as pH and membrane potential, in cellular compartments. A specific target molecule like Ca2+ is responsible for many physiological functions, such as neurotransmitter release, fertilization and ion channel functions. Studying the cellular channel functions is directly related to the transient increase in the myoplasmic free calcium concentration (Δ[Ca2+
  6. Detection of organic compounds in water analysis
    June 27, 2017
    Absorption of light correlates to the energy of a photon that is taken-up by electrons of the substance atom. The electromagnetic energy is transformed into internal energy of the absorbent substance. The absorbance of a substance quantifies how much of the incident light is absorbed by it (instead of being reflected or refracted). Precise measurements of the absorbance at many wavelengths allow the identification of a substance via absorption spectroscopy, where a sample is illuminated from one side, and the intensity of the light that exits from the sample in every direction is measured (see Fig. 1). A few examples of absorption are ultraviolet–visible (UV-Vis) spectroscopy or infrared (IR) spectroscopy. Fig 1. Concept of absorbance spectroscopy using white light and o
  7. Ca2+ Detection in Muscle Tissue using Fluorescence Spectroscopy
    June 27, 2017
    The use of fluorescent probes in cell physiology has emerged as indispensable tool in the analysis of cell functioning over recent years. The physics underlying fluorescence is illustrated by the electronic-state diagram (so-called Jablonski diagram, see Fig. 1), showing the three-stage process to create the fluorescent signal (Excitation - Excited/State Lifetime - Fluorescence Emission) in a fluorophore/indicator and simplified described below. Fig. 1– Jablonski diagram illustrating the processes of fluorescence by absorption of higher photon energy by a fluorophore and subsequent emission of lower photon energy, resulting i
  8. Award Winning Scientist Heads WPIs Biosensing Division
    June 09, 2017
    The notable expert in the area of electrochemical sensors, Xueji Zhang, PhD, Sr. Vice President and Chief Scientist at WPI, is leading the development for microsensors (including the ISO-H2S-100-Cxx) for free...
  9. WPI Awarded the FVMA Industry Award
    April 14, 2017
    World Precision Instruments was selected to receive the FVMA (Florida Veterinary Medical Association) Industry Award for 2017.
  10. Motorized Stereotaxic Frame Requires No Computer Control
    February 10, 2016
    When precision and repeatability of motion are critical, WPI's MTM-3 Motorized Stereotaxic Frame outperforms manual stereotaxic frame models, and it greatly reduces human error. The motorized axis of the MTM-3 provide precise, controlled, 3-dimensional placement of any probe or accessory within the working space of a stereotaxic frame. No computer is required. The MTM-3 supplied with WPI stereotaxic frames is also compatible with standard stereotaxic frames and may be adapted to existing frames of other manufacturers. Dual manipulator arm motorized systems are also available. MTM-3 Stereotaxic Frame Introduction This videos gives a 2 minute overview of the new frame. Why Get the MTM-3 Stereotaxic Frame for your Laboratory? For more inf
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