Atomic Absorption Spectrophotometer
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| MODEL: | AAS-300 |
| MAKE: | PERKIN ELMER CORPORATION (Switzerland) |
| PRINCIPLE: | Ground state atoms absorb light energy of a specific wavelength which is a characteristic of the element to be analysed. Amount of energy absorbed gives the quantitative determination of the element of interest. |
| APPLICATION: | Determination of Al, Co, Cu, Fe, Mn, Ni , As, Ca, Cd, Cr, In, Mg, Na, Pb, Sb, Si, Zn, etc. up to ppm level. |
PH - Meter
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| MODEL: | CYBER SCAN 510 |
| MAKE: | EUTECH INSTRUMENTS |
| PRINCIPLE: | The principle is based on Poggendorff's compensation method to balance the unknown e.m.f against a known e.m.f, which can be easily varied. |
| APPLICATION: | Determination of pH of aqueous solutions. |
Weighing Balance
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| MODEL: | BP211D |
| MAKE: | SARTORIUS AG (Germany) |
| RANGE: | 0.00001gm to 210gms |
U.V. Spectrophotometer
| MODEL: | SL-171 |
| MAKE: | ELICO LTD |
| PRINCIPLE: | According to Beer - Lambert's Law, when a beam of a monochromatic light passes through transparent medium, intensity of the emitted light decreases exponentially as the concentration of absorbing substance increases arithmetically. |
| APPLICATION: | Determination of Al, Co, Cu, Fe, Mn, Ni etc. |
Surface Area Analyser
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| MODEL: | SMARTSORB-90 |
| MAKE: | SMART INSTRUMENTS CO. |
| PRINCIPLE: | According to Brunaer, Emmet, Teller theory, at a known partial pressure, Amount of N2 absorbed by sample (Ncs) at Liq. Nitrogen temperature can be expressed in the form of mathematical expression, involving physical terms such as partial pressure of the gas (p), volume for monolayer absorption (Vn), volume absorbed at equilibrium pressure (Ncn), Sample weight (Ws), etc. |
| SURFACE AREA: | 4.38 x (Ncs x Vn)/(Ncn x Ws) x 273/(273+T) x (1-p/p0) |
| UNIT: | (m2 / gm.) |
| APPLICATION: | Determination of surface area from 0.2 to 1000 m2/gm |
D.C. Polarograph
| MODEL: | CL-357 & CL-25D |
| MAKE: | ELICO LTD |
| PRINCIPLE: | Polarography is an electrochemical method of analysis for both detection & determination of element in solution. It defines the current voltage relationship (polarograms) on electrolyzing an electro- oxidisable or electro-reducible solution in a polarographic cell. |
| APPLICATION: | Determination of Pb, Cd, Sn, etc. |