Water Quality & Instrumentation - Page 706

Manufacturer: YSI Brand: YSI

Dissolved oxygen (DO) meters measure the amount of dissolved oxygen present in water. The amount of DO helps to determine, for example, drinking water quality, the health of lakes or streams, and aquatic organism sustainability. A probe, also called a sensor or electrode, is inserted into the sample to perform the measurement, and the results appear on the meter display. Applications include sewage and water treatment plants, pollution control, fish farms, and various types of manufacturing.YSI manufactures instruments, sensors, and software for environmental water quality monitoring and testing. The company, founded in 1948, is headquartered in Yellow Springs, OH.

Manufacturer: Nutradip (Tri Meter) Brand: Nutradip Model: ND1100042

The Nutradip Tri-Meter combines the technology of the pH and TDS meters and addresses an additional key factor in hydroponic growing the temperature. Temperature in a nutrient solution is often wrongly overlooked. The temperature variance in a growing operation can significantly restrict the growth and yield of the plant(s). With no effort at all reliable continuous reading of TDS pH and temperature can simultaneously be monitored and correct levels can easily and reliably be maintained.

Manufacturer: Aqua Galaxy Brand: Aqua Galaxy Model: AG-SAM-2900

The SAM-1 smart aqua meter from Hydro Galaxy turns your smartphone or tablet into a power and convenient pH and temperature meter, Packaged with pH sensor. iPhone/iPad not included; used for display purposes along with the screen image.

Manufacturer: Thomas Scientific Brand: WTW Model: 600546

Nephelometric or transmittance measuring-the nephelometric measurement at 90° scattered light is advantageous for lower turbidity, whereas the transmission measurement at 180° is beneficial for medium to high turbidity values: With increasing turbidity, restray and scattering effects between particles are growing bigger. The reduction of light intensity in this case leads to a more accurate result than a 90° nephelometric measurement. Therefore, lab meters for high values are equipped with several measuring options: ratio modes calculate the final result from different measured angles. For ratiometric measurements, there is no specific standard method to be followed; rather, procedures are established by the application or industry. White light has a higher sensitivity for small particles, however, the inherent coloration of the solution has a stronger disturbing effect in this case. The IR measurement is required by DIN ISO, the white light measuring by US EPA.

Manufacturer: Scientific Equipment of Houston Brand: SEOH

ASTM Approved Non-Mecurery, Blue Spirit Thermometers

Manufacturer: Great Plains Industries Brand: FLOMEC Model: 039-TM150-N

1 ½ in. PVC water meter with NPT fittings and local electronic LCD computer that reads Gallons, Litres and Cubic Feet. Use with water and mild chemicals.

Manufacturer: BYK-Gardner USA Brand: BYK-Gardner Model: 500

The BYK-Gardner 500 bubble viscometer tube set has a 9mL capacity and a 0.05 to 0.31 stokes viscosity range, and is suitable for testing fluids such as resins and varnishes. The set includes 5 sealed bubble tube standards, lettered in the A5 through A1 range and two grade A sample testing tubes with cork stoppers. Sample fluid viscosity is determined by comparing bubble rise time to those of bubble tube standards and choosing the closest match. The sealed standard tubes have a 15-year shelf life and can be National Institute of Standards and Technology (NIST) recertified. This bubble viscometer tube set meets ASTM International D1545 standard for testing viscosity. A viscometer, also called a viscosimeter, is an instrument used to measure the friction caused by the relative motion of a Newtonian fluid and a known surface, and is usually expressed in units of poise (P), centipoise (cP), pascal seconds (Pa s), and millipascal seconds (mPa s). Viscometers have several forms, including but not limited to falling ball, rotational, vibrating, capillary, funnel, and bubble. A falling ball viscometer measures the time it takes for a ball of known diameter and density to fall through fluid in a cylinder of known diameter. A rotational viscometer measures the force required to stir a fluid. A vibrating viscometer measures the power input necessary to keep the oscillator vibrating at constant amplitude while immersed in a fluid. A capillary viscometer has a narrow-bore vertical section with two printed marks that measure time required for a known volume of fluid to fall a known distance. A funnel viscometer, such as a Ford, Zahn, or Shell cup, measures the time it takes a known volume of fluid to flow from the base of a cone through a short tube. A bubble viscometer measures the time required for an air bubble to rise through a fluid. Viscosity measurements are used in laboratories, research and development, process control, and plant quality control applications. Some viscometers are manufactured to meet industry or gover...

Manufacturer: AMTAST Brand: AMTAST Model: AMT27

Specifications: Measurement Range:0~1100 NTU/FNU, 0~275 EBC, 0~9999 ASBC Resolution:0.01(0~100 NTU), 0.1 (100~999 NTU), 1 (999~1100 NTU) Accuracy:±2%(0~500 NTU), ±3% (501~1100 NTU) DefaultCalibration Standards:0.02 NTU, 10.00 NTU, 200 NTU, 500 NTU, 1000 NTU orUser-Defined Light Source:Infrared-emittingdiode (850 nm wavelength) Detector:SiliconPhotodiode Stray Light:

Manufacturer: isoSPEC Brand: isoSPEC

isoSPEC lamps are designed and manufactured to achieve all of the following fundamental requirements for a spectral line source. • Intense emission of resonance (ground state derived) lines. • Narrow line width, for maximum sensitivity and linearity. • Minimal spectral interference from continuum emission, present in the cathode. • Rapid warm up to produce stable long term light emission. • Noise free operation and long running life and a 5-year shelf life. • Cathode materials and geometry achieve a combination of spectral purity and a suitable sputtering rate. A high sputtering rate will give high intensity at the expense of lamp life, sensitivity and linearity. isoSPEC lamps have been tested and found to work as well as lamps sold specifically for SMITH-HIEFTJE background correction, however due to the high energy pulse used, some elements will be consumed at a higher rate reducing lamp life.

Manufacturer: MG Scientific Brand: MGM

Salient FeaturesMains cum Battery operatedIn-built Rechargeable BatteryIn-built Light ShutterHighly stable & accurateStandard German Glass FiltersModel Digital DigitalStd. Glass Filter 8 5Mini Volume 1 ml. 1 ml.Display 2 1/2 Digit LED 2 1/2 Digit LEDRange 400-700 nm 400-700 nmOutput OD (0 to 1.99) OD (0 to 1.99)Resolution OD : 0.01 OD : 0.01Accuracy 0.5% FSI 0.5% FSIDetector Selenium Photocell/Photodiode Selenium Photocell/PhotodiodeLight Source 6.8v, 300mA 6.8v, 300mAPower 230v + 10% and In-built Battery 230v + 10% and In-built BatteryAccessories Test Tube set of 5, Spare Lamp, Dust Cover, ManualFilters 8 Filters - 400, 420, 480, 500, 520, 540, 620, 680 nm 5 Filters - 420, 480, 540, 620, 680 nmProduct Range Spectrophotometers, Flame Photometers, Digital pH Meters, Conductivity/TDS Meters, Turbidity Meters, Digital D.O. Meters, Water & Soil Analysis Kits, K.F. Titrimeter etc.