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The VELP ®  Scientifica ZX4 Advanced Infrared Vortex Mixer, shown, meets the multiple needs of laboratories with an infrared touch sensor, continuous operating mode, and adjustable stirring speeds up to 3000 rpm. TheVELP ®  Scientifica ARE Hot Plate Stirrer with Aluminum Top offers optimal heat transfer with premium homogeneity and is an excellent option for industrial and lab applications up to 15 liters and 370°C (698°F). The VELP ® Scientifica AREX Ceramic-Coated Stirring Hot Plate ensures precise thermoregulation and a high degree of reliability and safety. With a ceramic-coated top, it also provides exceptional chemical resistance. For a low-cost method of measuring disinfection efficiency and contamination levels, take a look at the new GreenLight ® Environmental Bacterial Count Systems. The systems are ideal for monitoring wastewater discharge for disinfection limits in NPDES permits, drinking water plant disinfection, and bacteria in water at beaches. The systems measure ...

In terms of lab safety, pumping flammable liquids can create hazardous conditions. Both fire and explosions can result if safe handling of materials is not adhered to by lab workers, students, and researchers. Examples of liquids that are flammable include ethyl ether, acetone, and benzene. Combustible liquids include acetic acid, formic acid, and formalin. When flammable and combustible liquids flow, they may create a buildup of static electricity. To reduce the hazard levels, follow these five general safety guidelines. 1)  Always use a metallic pump with air-driven or explosion-proof (XPRF) motor. 2)  Make sure all components are metal. Plastic can build up static charges and cannot be grounded. 3)  Electrically ground the operator and all pump components including motor (even if air-driven), inlet and discharge piping, hose clamps, holding tank, and receiving tank. 4)  Avoid splashing liquids—splashing generates static electricity that can result in ignition or explos...

If you collect environmental water samples for testing for dissolved minerals, chemicals, or miscellaneous contaminants, you will need sampling equipment that meets your specific needs. Two common types of samples are grab samples and composite samples. Whether you are sampling in a treatment plant or out in the field, some of the items below will help you retrieve your samples. To ensure accurate sampling results, your liquid sampler should be made from inert materials to prevent chemical incompatibility. It's also best to select a liquid sampler in various lengths. For open water sampling, choose from dipper sampling systems or dippers and bailers with replaceable or removable cups, in either plastic, PTFE, or stainless steel options. For hard-to-reach areas, select portable automatic peristaltic pump sampler systems that can float and be programmed to EPA requirements. Types of Water Sampling Equipment Bailers:  hollow tube apparatus used to retrieve groundwater sa...

When choosing laboratory equipment such as a mixer, several variables should be considered specific to your application. For mixers, gather the follow information: Stir-Pak High-speed, Low-Torque Mixer System (23-2300rpm, 115 VAC) What container capacity do you need? What liquid viscosity? What are your torque requirements? What are your horsepower requirements? What rotational speed or RPM do you need? What diameter for the mixing propeller? What are your requirements for duty cycle? What will be the source of your power supply? Laboratory Mixers  are available with permanent magnet, universal, or air-drive motors. Choose different mixer mounts for mounting on tanks or stands. A variety of impellers and paddles lend versatility to the mixer you select. Industrial Mixers  are available with electric- or air-driven motors for up to 1-hp. Fixed- or variable-speed and direct- or gear-driven options are available. Specialty Mixers include: Sanitary Mixers  for all app...

Water purification lab equipment ensures the quality of the water used in the lab to perform successful and reliable tests. Many  water purification systems   can handle a range of applications from basic buffer preparations to highly sensitive protocols such as HPLC, PCR, or uses that require precise TOC removal and measurement. Other systems can be used for rinsing lab glassware, supplying autoclaves and ultrapure water systems, and preparing and diluting buffers, reagents, and media. Water grade standards are classified as Type 1 (ultrapure water, 18.2 MΩ), Type II (pure water, 1 to 15MΩ), Type III (reverse osmosis water) and Type IV (cartridge/filter system water). Water feed sources can range from tap water to distilled, deionized, or reverse osmosis (RO) water). Methods of Purification: Adsorption:  Activated carbon bonds with the chlorine and organic materials in feedwater to immobilize and remove these impurities Deionization:  The removal of ions and minerals by sy...

The full range of Masterflex ®  peristaltic pumps serves markets including biotechnology, pharmaceutical, chemical, food & beverage, cosmetics, industrial, R&D, printing, water/wastewater, manufacturing, semiconductors, textiles, and environmental. Quick to install, easy to operate, with configurable systems, the Masterflex pumps are among the most versatile. Which pump works best for which application? Consider the following variables: What flow rate do I need? What chemical am I pumping? Do conditions such as viscosity or back pressure play an important role in my decision? Once you have the answers to these questions, here's an overview of the Masterflex Peristaltic Pump Series:   Compact, Low Flow, OEM C/L ®  tubing pumps combine low flow and a compact size into a single pump that sits on your benchtop or panel mounts in your equipment rack—ideal for analyzer applications. C/L pumps are also excellent for autoanalysis, flow cell, sipper, OEM, and low flo...

Our tech experts respond to some of your most-asked questions, covering Masterflex® peristaltic pumps, pH, baths & circulators, and mixers. Masterflex  Peristaltic Pumps and Tubing Q: I need a pump to pull up fluid from a reservoir. The pump will be several feet higher than the liquid. What pumps are good for this? A: The term that rates a pump's ability to pull up fluid is called suction lift. You will need to find a pump that has a suction lift, usually rated in feet of H 2 0, which is greater than the distance you need to pump. For example if you wanted to pump a fluid from a well that is 12', then you would need a pump that has a suction lift of at least 12 feet.  One pump technology that is excellent for suction lift is a peristaltic or tubing pump. Double air-operated diaphragm pumps are also great for this type of application, but are air powered.  With either pump, you should always add some extra ability in the pump. If the fluid being pumped is more vi...

El  Vscan   está cambiando la manera en que los médicos interactúan con sus pacientes y de acuerdo a las investigaciones, en pocos años la gran mayoría utilizarán el Vscan diariamente, considerándolo  tan indispensable como un estetoscopio. El  Vscan   le da a los médicos la capacidad de ver lo que está pasando dentro del cuerpo de sus pacientes en la palma de su mano.  Con el Vscan el médico puede hacer diagnósticos más certeros y rápidos, mejorando el cuidado de sus pacientes.  El  Vscan   tiene el potencial de ayudar a identificar situaciones críticas y mejorar la eficiencia del tratamiento de los pacientes.  También reduce los gastos médicos  al evitarse referir a un paciente con el especialista innecesariamente. Permite hacer diagnósticos rápidos facilitando la toma de decisiones en situacions críticas y de emergencia.

Versatile, high-intensity ultrasonic processors can safely process a variety of organic and inorganic materials in a range of volumes. Typical applications for this lab equipment include cell lysing, sample preparation, disaggregation, homogenization, particle size reduction, soil testing, and acceleration of chemical reactions. Ultrasonic Processor with Pulsing Button Vibrations from the probe form millions of microscopic bubbles (cavities) that expand and implode violently. This phenomenon, called cavitation, produces the powerful shearing action at the probe tip and causes the molecules in the liquid to become intensely agitated. Probes are fabricated from titanium alloy TI-6AL-4V, and act as mechanical transformers to increase the amplitude of vibration generated by the converter. When seeking to achieve efficient cell disruption with probe-style ultrasonic processors, consider the following: Probes:  The larger the probe diameter, the larger the volume that can be proc...

Ultraviolet lab equipment , such as lamps, viewing cabinets,transilluminators, imaging systems, and radiometers, are versatile instruments in the laboratory. Ultraviolet light (UV) is the part of the electromagnetic spectrum that is adjacent to and greater in energy than visible light. The ultraviolet spectrum extends from 180 to 400 nm and is divided into three general categories: shortwave, midrange, and longwave. Short/Long-Wave UV Lamp Shortwave UV light  extends from 180 to 280 nm with a peak in energy at about 254 nm. This UV light can detect altered documents and counterfeit currency, provide forensics field testing, detect mercury, sterilize, analyze pesticides, and more.   Midrange UV light  extends from 280 to 320 nm with a peak in energy at about 302 nm. Midrange UV light is used for optical alignment, solar experimentation, UV curing, mineralogy, and more. Longwave UV light,  also called "black light" or "wood light," extends from 320 to 380 ...

Lab safety requires that signage identify hazardous areas that warn workers of danger or provide safety instructions. OSHA states: "All employees shall be instructed that danger signs indicate immediate danger and that special precautions are necessary." The administration also indicates specific colors to be used for danger, caution, and safety instruction signs. To use these guidelines and customize your own sign, follow these steps: Select the sign material to meet your needs: Adhesive Vinyl —flexible, 4-mil pressure-sensitive material is ideal for your low-cost, light-duty applications Plastic —medium-duty, general-purpose, 0.055"-thick polyethylene material is perfect for indoor and sheltered outdoor locations Aluminum —0.040"-thick material offers the strength of metal but without rusting. The surface is over-laminated to protect from splashes and dirt for long-term outdoor exposure Traditional OSHA-style signs and labels are the most widely reco...

When selecting tanks as industrial or lab equipment, compare the physical and chemical properties of the plastics to determine which is best for your application. Mechanical stress, high temperatures, and extended use tend to intensify the effects of chemicals on a tank. Cylindrical Tank with Cover and Spigot, HDPE Operating conditions and type of chemical can decrease maximum service temperature. Continuous service temperatures in ranges above ambient can affect tanks in at least two ways: (1) the useful life of the tank may be shortened; and (2) the ability of the container to maintain its shape may decrease, perhaps resulting in distortion. Polypropylene  offers high temperature resistance and is less expensive than stainless steel tanks. It provides good resistance to many organic chemicals. Applications for this material include plating and pickling lines and etch tanks for processing. This material should NOT be used with strong oxidating agents, subfreezing temperature...

The selection of Masterflex ®  peristaltic pumps has increased in the last few months, with new options for laboratories, research facilities, and industrial applications. The versatile pumps are popular for many reasons, including their contamination-free fluid handling processes. Here are the latest: The Masterflex ®  L/S ®  Digital Console Process Drives are housed in powder-coat steel for a more economical price. These peristaltic pumps are ideal for fluid transfer, dispensing, and metering applications in laboratory, process, and washdown environments. The housings are completely sealed and IP66 and NEMA 4X rated. These tubing pumps offer analog remote control options and simple programming, which work well for automated process applications. The pumps' brushless, maintenance-free motor has ±0.1% speed control accuracy with a 6000 to 1 turndown ratio. It features a programmable dispense interval that lets users set the delay between dispense cycles for convenient, auto...

Refractometers @esgdm offers a range of refractometers including: Manual handheld refractometers, Digital handheld refractometers, Digital benchtop refractometers, Abbe refractometers. Refractometers are used to measure the concentration of aqueous solutions. The refractometer requires only a few drops of liquid and are used throughout the food, agricultural, chemical and manufacturing industries. A popular use is to measure sucrose concentrations which is reported on a BRIX scale. The % BRIX scale is calibrated to the number of grams of cane sugar contained in 100 g of water and is used to show the concentration percentage of soluble solids content of a sample (water solution). The soluble content is the total of all the solids dissolved in the water, beginning with sugar, salts, protein, acids etc. When light enters the liquid it changes direction; This is called refraction. Refractometers measure the degree to which the light changes direction, called the angle of refrac...