Consist of polymer microspheres suspended in a pure, aqueous medium
Uniform in particle size distribution to ensure consistent light scattering and precise enough to permit calibration down to and including 0 NTU
Primary turbidity standards for use in 90° nephelometers such as the 2100A, On-line instruments.
Ready to use — no mixing or dilution required
Nontoxic and won't settle out of suspension
Designed for 90° white light turbidimeters (EPA 180.1 design).
Guaranteed accuracy within 1%.
The centrifugal fan which has a low chord impeller and split volute diffuser casing is directly driven by a DC dynamometer giving a variable speed from 0-4000 rpm, with a swinging stator providing load cell torque measurement and equipped with a toothed wheel for speed measurement. The bench consists of a welded steel frame mounted on castors providing two work surfaces for experiments together with ample storage space for experimental apparatus when not in use. The working surfaces accommodate a control console and a centrifugal fan with variable speed dynamometer drive, to which can be coupled a series of inlet and outlet ducts. The control console houses all electrical components and circuitry associated with the power and speed control, while the instrument panel includes: START/STOP pushbuttons, speed control knob and torque, speed, armature voltage and current displays. The ductwork supplied with the bench is manufactured in aluminium sections assembled by deep spigoted sockets, sealed by O rings. It includes a venturi nozzle, a bell mouthed inlet, flow straighteners, pressure tapping points and disc valves and is designed to allow assembly to various configurations by means of quick release toggle latches. A dual multi-slope manometer scaled 0- 5 and 0-2.5 kPa is supplied for use with the air flow nozzle.
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Used in surgery for gripping, dissecting thick tissues and coagulation of vessels.
Adjustment and good gripping of the jaws.
Material: Martensitic steel (quenched, magnetic steel).
Martensitic steel composition: 0.15-0.20% carbon, 12-13% chromium.
Reusable.
Pressure force instrument: dissecting forceps, springy.
Straight.
With 1 x 2 teeth.
Flexible arms.
Length: 14.5 cm.
Material: PVC, glossy finish; Approximate thickness 0.19mm; able to survive rough treatment by the children. Inflating valve made of hard plastic, with two plastic loops for inserting rope/thread for hanging.
Topographical globe, inflatable (without the use of a pump): showing continents, oceans, rivers, mountains, deserts, forests, et cetera, but without emphasis on political boundaries (printed in dotted lines).
Used in surgery for gripping, dissecting thick tissues and coagulation of vessels.
Material: Martensitic steel (quenched, magnetic steel).
Martensitic steel composition: 0.15-0.20% carbon, 12-13% chromium.
Adjustment and good gripping of the jaws.
Pressure force instrument: dissecting forceps, springy.
Straight.
With 1 x 2 teeth.
Flexible arms.
Length: 25 cm.
Reusable.
Equivalence Turbidity Standard is packaged in plastic case with a visual comparison card.
Polystyrene technology allows longer shelf life.
Tube size is 15 x 103mm and fits in most spectrophotometers.
All concentrations of Turbidity Standards are verified to meet tight quality control specifications, for reporting purposes and guaranteed to save you time. As a primary standard, Turbidity Standards can be used to calibrate or verify any turbidimeter.
EPA approved primary turbidity standard
Save time and eliminate errors - no need for dilution
Long shelf life.
Instrument-specific standards consisting of patented, polymer microspheres suspended in a pure, aqueous medium
Designed for 90° white light turbidimeters, except where noted.
Nontoxic and won't settle out of suspension
Accuracy within 1%
Ready to use — pour right from the bottle into sample cuvets.
Uniform in particle size distribution to ensure consistent light scattering and precise enough to permit calibration down to and including 0–1 NTU.
Supplied in ready-to-use sealed vials
Save time and eliminate errors - no need for dilution
All concentrations are verified to meet tight quality control specifications, are EPA compliant for reporting purposes and are guaranteed to save time.
Turbidity Standards are stabilized Formazin standards prepared in ready-to-use concentrations to ensure accurate turbidity measurements.
The Standard Set A, delivers all the concentrations needed to calibrate and verify the Portable Turbidimeter.
Save time and eliminate errors - no need for dilution
The standards are supplied in sealed vials, eliminating the need for preparation, and ensuring safe operation.
Turbidity Standards are stabilized Formazin standards prepared in ready-to-use concentrations to ensure accurate turbidity measurements.
Supplied in ready-to-use sealed vials
EPA approved as primary calibration standards
All concentrations are verified to meet tight quality control specifications, are EPA compliant for reporting purposes and are guaranteed to save time.
Turbidity Standards are stabilized standards prepared in ready-to-use concentrations to ensure accurate turbidity measurements.
Save time and eliminate errors - no need for dilution
EPA approved primary turbidity standard
Eliminate the opportunity for inaccurate turbidimeter calibrations resulting from the improper dilution or handling of stock solution.
Long shelf life
As a primary standard, Turbidity Standards can be used to calibrate or verify any manufacturer's turbidimeter.
All concentrations of Turbidity Standards are verified to meet tight quality control specifications, are EPA and ISO compliant for reporting purposes and guaranteed to save you time.
Turbidity Standards are stabilized standards prepared in ready-to-use concentrations to ensure accurate turbidity measurements.
EPA approved primary turbidity standard
Long shelf life.
Eliminate the opportunity for inaccurate turbidimeter calibrations resulting from the improper dilution or handling of stock solution.
Save time and eliminate errors - no need for dilution.
It consists of support rod, single pulley, desk-side clamp, and small iron ring and nylon wire. It is used to prove that the standing pulley can’t save effort but can change direction; the movable pulley can save half of effort but can’t change direction of force. The height of support rod is adjustable.
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This Vial Stand offers space for six round cuvettes with a diameter of 24 mm
While in the stand, the vials are safely stored and cannot slip or tip over - it's the perfect assistant for smooth test procedures!
Thanks to the transparent acrylic, users always have an unobstructed view of sample development and color changes.
The floor mounting frame can be easily converted to a bench-mounted version when using the bench mounting feet arrangement which is supplied as standard. The internal working dimensions for mounting experiments are 1.22m x 0.76m. Manufactured from high quality, ergonomic aluminium profile, the Universal Frame and Stand comprises an upper dual frame, which creates a continuous mounting slot around all four sides of the frame thus allowing the individual experiment components to be interchanged quickly. Should specimen beams longer than 1.22metres be used, the working gap allows the beams to run through the frame and protrude outside the working area.
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To upgrade or complete your concrete or mortar compression and flexure testing machine. Stand Alone Control Console Connected to a load frame, it provides tests throughout all phases data acquisition, display, processing, saving of the test dates, software for the print out of results and certificate.
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Hard-tempered glass surface resists surface scratching
Reusable 28 × 70mm glass cuvettes
Cuvette stand stores up to 11 cuvettes or calibration standards.
Supplied with threaded light shield caps.
Preservative used enhances stability
Biodegradable, safe and non-toxic
Pre-diluted
Do not include formazin
Ready and easy to use
Type: Turbidity Standard
Volume (Metric): 100 mL.
Standards not harmful to the environment or to worker safety
Preservative used enhances stability
Biodegradable, safe and non-toxic
Pre-diluted
Do not include formazin
Ready and easy to use.
