Led galileo thermometer Detailed product description It's a must-have for the desk of any science enthusiast. The galileo thermometer is based on a thermoscope invented by galileo galilei in the early s. The thermometer consists of a sealed glass tube which is filled with water and a number of floating spheres. The glass spheres are filled with a colored liquid and float up and down according to the changes in temperature. When the temperature rises, the spheres will sink and inversely; when the temperature falls, the spheres will rise due to the changes in the specific gravity of liquids. You always read the lowest of the floating temperature tags to determine the correct temperature. Various colors available Already pass safe certification like ce.
Usb digital microscope Silverstar" is one of the leading brands in the market today. In 2002, we made a grand entry as manufacturers and exporters of the utility items such as : We would like to introduce to you our best selling gadget for 2007 "usb digital microscope". Due to customer request we have enhanced the digital camera to 1.3 mega pixels, which expands the usage of this product in many more fields Product specifications Image sensor: 1.3 mega pixels Video capture resolution 1280x960, 800x600, 640x480, 352x288, 320x240, 160x120 Still image capture resolution 1280x960 Color: 24bit rgb Lens: dual axis 27x & 100x microscope lens Focus range manual focus from 10mm to infinite Flicker frequency 50hz/60hz Frame rate max 30f/s under 600 lus brighness Magnification ratio 10x to 200x Shutter speed: 1 sec to 1/1000 sec. Video format avi format White balance: auto. Exposure: auto Light source: 4 led white light Pc interface: mini usb 2.0 Operation system: windows 98se/me/2000/xp Osd language english Power supply: 5v dc from usb port Size: 110mm(l)x33mm(r) Accessories A1-alloy stand Safety cover User guide Cd rom (driver) Gift box Packing: Unit: 25 x 18 x 8cm (l x w x h), weight: including metal stand 120gw 20pcs/ctn. Dimension: 50 x 40 x 25cm (l x w x h) gross weight: 10.5kgs Packing: Unit: 25 x 18 x 8cm (l x w x h), weight: including metal stand 120gw 20pcs/ctn. Dimension: 50 x 40 x 25cm (l x w x h) gross weight: 10.5kgs
Ph, tds and temperature meter Specifications ym-2006 Range Ph: 0.00 -- 14.00ph ec:0.00 -- 19.99ec C: -50pc -- 70pc pf; _58pf -- 158pf Cf: 0.0 -- 199cf tds: 10 -- 19990ppm Resolution: Ph: 0.01ph pc: 0.1pc pf: 0.2pf Ec:0.01ec cf:0.1cf tds:10ppm Accuracy Ph:+/- 0.10 ph pc:1.0pc Ec=cf=tds:+/- 2% f.S Operating temperature:0pc-- 50pc Automatic temperature compensation:0pc--50pc Batteries:dc6vor4x1.5v(ag13) Dimensions:155x86x22mm Weight:222g 100/1
Ph-messer (ph tester) Digital ph meter tester - universal tester! 1. Pen-type ph meter 2. Lightweight and compact 3. Quick accurate readings 4. Membrane switching 5. Long battery life This handy ph pen/meter is a great tool for any aquarist. It is extremely easy to use and is waterproof. Simply dip the meter in the solution to get the ph reading. Its high accuracy and resolution also make it suitable even for the most-demanding applications. Note: ph 7.0 solution is required for calibration. Specifications: Large readout display Range: 0.0-14.0 ph Resolution: 0.01 ph resolution Accuracy: +/- 0.01 ph Fixed electrode Operating temperatures: 5`c to 50`c Atc: automatic temperature compensation for accurate readings! Power supply: 3 x 1.5 volt (button battery) Battery life: 500 hours of continuous use Size: 6" x 1.00" largest diameter Weight: 70 grams Waterproof mini ph tester (0.01 ph resolution) - totally waterproof!
X-ray machine jpx-01 Features: 1.Used in ward and emergency treatment room for radiography. 2.Combined x-ray generator. 3.Single focus, full wave rectification. 4.Single-chip microcomputer controls and convenient service. 5.Liquid crystal display and error can be automatic warned. 6.Remote control exposure device. Main technical parameter
Spy ear A kind of new type toy, using it may strength your listening. You can investigate 24 hours a day, at any place, and hear the secrets you want to listen to. Make your dream of becoming a fªspyfª come true. The device is fit for all persons.
6" brass sextent Our 6"-inch size brass sextant with a silver scale and vernier readout, magnifying lens, vernier locking system, rotating telescope, and six dark filters in antique or brass polish finish. The instrument is kept in a wooden box. Size : 6 inches of the sextent only. Box size suitable to the sextent x 10 x 5.5cm Weight : 0.800 kg.Only for sextent. Box weight extra
8" inches brass sextent Our 8-inch brass sextant with a silver scale and vernier readout, magnifying lens, rotating telescope, and 6 dark filters in antique finish. It comes complete with a wooden polished box Size : 8" only for sextent and box size suitable to the sextent. Weight : 1.00 kg.
Double barrel telescope This is a beautiful 1m (100 cm) double barrel telescope and fine polished wooden tripod tilting stand. The 52 mm object glass produces a sharp image and enlarge its field. It is focused by rotating a large adjusting drum wheel near the eyepiece. A sighting telescope that can be adjusted from 9.5 to 13 inches (24 cm to 33 cm) in length, a main eyepiece on the primary telescope that extends over 2 inches for exact focusing. The tripod legs extend from a length of 37 inches (94 cm) to 63 inches (160 cm), so that the telescope can be positioned for comfortable observation. The telescope can be easily removed from the collapsible stand. The telescope itself has a full 360-degree horizontal range of motion around the tripod, and 180 degrees vertical. The telescope is designed keeping in view the requirements of a nautical scope - i.E., greater field of view. More the magnification. The 52 mm lens gives the best combination of steadiness and field of view with magnification.This telescope has been designed as a terrestial scope and not for astronomical observations.
6" pull out telescope This 6" pullout telescope is is a functioning telescope with focus adjustment (by shortening or lengthening the pull out sections), and the optics are very good.
Brunton compass The brunton compass is a heavy solid brass or gun metal reproduction of a handheld european compass used in coal mines and for surveying purposes. The front sight folds up and the window in the lid serves as a rear sight. The compass has a needle lift and fixes mechanism to protect the compass when being transported. Size : 3" Weight : 0.400 kgs(only for compass)
HG23 humidity sensor 4.1 Input power: 1VAC (sine wave), 1kHz 4.2 Operating temperature range: -20=J ~ 70=J 4.3 Operating humidity range: 95 %RH or less 4.5 Accuracy: f+2.5 %RH (at 25=J, 60 %RH) 4.6 Hysteresis: within 2 %RH (40 %RH ~ 80 %RH) 4.7 Stability: 1 year < 2 %RH 500pcs/bag 10000pcs/carton
302- thermo-hygrometer Messuring range: Temperature: -50~+70c/ -58~+158f Humidity: 10%~99%
Diameter: 55mm Sensative Good quality
Type a v-shaped industrial glass thermometer It remains Direct and accurate, and more reliable and resistant to vibration. 50 pcs at least
Type b v-shaped industrial glass thermometer It remains Direct and accurate, and more reliable and resistant to vibration. 50 pcs at least
Round glass thermometer with protecting case 1 glass inserts: the top is sealed with plaster and cork; the accuracy is controlled in f+1 line. (the testing comply with din16195 and jjg130-2004) 2 scale board: white, aluminum 3 material of protecting case: brass, carbon steel or stainless steel 50 pcs at least
Dissolution tester
Particle size range: 2¬ªm-100¬ªm Channels: 8, defined between 2¬ªm-100¬ªm Sample volume: 0.5-9ml, 10-100ml, entire volume Sample flow rate: 5ml/min-25ml/min Sample volume accuracy: ·+f+1% of selected volume Sensor resolution: ·+10%(usp) Concentration limit: 10000 particles/ml (5% optical coincidence) Repeatability: rsd·+2% (particle counts are more than 5000 particles per sample volume) Power supply: 85-265v, 50hzf+1%, ·+80w Environment temperature: 10f¦-40f¦
Particle size range: 2¬ªm-100¬ªm Channels: 8, defined between 2¬ªm-100¬ªm Sample volume: 0.5-9ml, 10-100ml, entire volume Sample flow rate: 5ml/min-25ml/min Sample volume accuracy: ·+f+1% of selected volume Sensor resolution: ·+10%(usp) Concentration limit: 10000 particles/ml (5% optical coincidence) Repeatability: rsd·+2% (particle counts are more than 5000 particles per sample volume) Power supply: 85-265v, 50hzf+1%, ·+80w Environment temperature: 10f¦-40f¦
