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عرض 661–675 من أصل 1963 نتيجة
Dicot Stem Anatomy T. S. & L. S.
This model shows the transverse and longitudinal section of a dicotyledonous stem in which case the cambium ring has been formed but no secondary growth has yet taken place. Useful model for study of epidermis, lentice, cork layer, cork cambium, cortical parenchyme, starch sheath, medullary rays, phloem, sieve plate, sieve tube, phloem parenchyma and inter fasicular cambium. xylem, pitted vessels, bordered pitted vessels, annular vessels, spiral vessels, pith etc. Mounted on base, with key card.
SKU: B12864Digital / Analog Training System
Solderless Breadboard has 1680 tie points. Provided with 2 Terminal strips and 4 Distribution strips. Built in DC Regulated Power Supply. DC Supply ± 5V/ 1 Amp. 0 to ± 15V DC (Variable), 1 Amp. Built-in Function Generator.
Waveform : Sine, Square and Triangle (with selector switch),
Frequency : 1 – 100 Hz Variable
Amplitude : Variable up to 10 V, TTL 5V p-p
Data Switches (Bounceless) – 8 No.
LED Display (buffered) – 10 No.
Clock Pulsar – 2 No.
Seven Segment Display with Decoder IC 7447 – 2 No.
Speaker 2.5 Dia. with sockets – 1 No.
BNC Plug with 2 mm Sockets – 2 No.
4 mm socket connected with 2 mm sockets – 2 No.
Interconnection leads having 2 mm plugs at one end – 10 No.
Interconnection leads having 4 mm plugs at both end – 10 No.
22 SWG Hook Up Wire of 20 cm length – 100 No.
Comprehensive User’s Manual – 1 No.
Input 220 V, 50 Hz. AC with On/Off indicator.SKU: PH93022Digital Colony Counter
4 digit LED display Range 0-9999 with 125 memory, hold and count correction facility. Data restored even after power failure.
Technical Specifications:
Digital Display: 4 digit, 999 Max. Count.
Dish Size: 110 mm.
Magnification: x1.7.
Dimensions: L 210 x B 270 x H 125 mm (approx.).
Weight: 3 Kgs. (approx.).
Packaging: 23 cm x 28 cm x 20 cm.
Power: 230 V ± 10% AC, 50 Hz, 40W.
Accessories: Marking Pen (1 No.), Magnifier Lens (1 No.)SKU: CH11187Digital Dissolved Oxygen Meter
3½ digit LED display with Gold/Silver D.O. Probe (Table Model). These are used to evaluate oxygen liquefy in water and index of biological and physical processes in water. With the specification of power 230V A.C. 50 Hz. and range between D.O. 0 to 20.0 PPM, these are highly durable and accurate.
Technical Specifications:
Range D.O.: 0 to 20.0 ppm,
Resolution D.O.: 0.1 ppm,
Accuracy D.O.: 0.1 ppm + 1 count,
Temp. Compensation: 0°C to 50°C
Manual Compensation D.O.: + 3%
D.O. Sensor type: Amperometric Gold / Silver membrane.
Display: 3½ digit LED display,
Power: 230 V AC 50 Hz.
Weight: 2 Kg.
Standard Accessories: DO Electrode : 1 No., Instruction Manual : 1 No., D.O. Membranes : 10 Nos.SKU: CH11189Digital Gauss Meter
Digital Gauss meter works on the principle of Hall Effect in semiconductor. When a semiconductor with current flowing in one direction is introduced perpendicular to a magnetic field a voltage is produced at right angles to the current path. The magnitude of this voltage is proportional to the intensity of the magnetic field. This voltage is called Hall Voltage. This Hall voltage is amplified and calibrated as magnetic field.
Specifications:
Range: 0-2 KG & 0-20 KG
Resolution: 1 G at 0-2 KG range
Display: 3½ digit LED
Power Supply: 220 V, ±10%, 50 Hz AC
Transducer: Hall probe-InAsSKU: PH93225GDigital Multimeter
Display 3 ½ digit, 2000 count Backlit LCD, 1.1″ digits.
Data Hold To Freeze the displayed data.
Over range indication “1” is displayed
Polarity Automatic (no indication for positive polarity); Minus (-) sign for negative polarity.
Measurement Rate 2 times per second, nominal.
Low Battery Indication “BAT” is displayed. if battery voltage drops below operating voltage Battery one 9 volt battery.
Fuses mA, ?A ranges; 0.2 A / 250 V Fast blow A range; 1 A / 250 V fast blow.
Operating Temperature 32° F to 122°F (0°C to 50°C)SKU: PH64510Digital pH Meter
Handy and accurate pH measuring instrument for chemical, Food, Waste water and laboratory applications. Different pH combination Electrodes available.
Sensor / Input: pH Combination Electrode
Range: 0 to 14.00 pH
Accuracy: ± 0.02 pH
Special Features: Portable
Battery Operated
0 to 100 °C Temp. Compensation
Interchangeable pH ElectrodeSKU: PHM10001Digital Photo Colorimeter, 5 Filters
5 filters mains operated with optical density in 2½ digit LED display, Range 400 to 700 nm, 1 ml solution measurement.
Technical Specifications:
Std. Glass Filter: 5,
Mini Volume: 1 ml,
Display: 2½ Digit LED,
Range: 400-700 nm,
Output: OD (0 to 1.99),
Resolution: OD : 0.01,
Accuracy: 0.5% FSI,
Detector: Selenium Photocell,
Light Source: 6.8 V, 300 mA,
Power: 230 V ±10%, 50 Hz, AC,
Accessories: Test Tube Set of 5, Spare Lamp, Dust Cover, Manual.
Filters: 5 Filters 420, 480, 540, 620, 680 nm.SKU: CH11181
