Analytical Laboratory Balance
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 Ohaus Voyager Pro Analytical Laboratory Balance VP114CN  US $3,703.92
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 Ohaus Explorer Pro Analytical Laboratory Balance EP214C US $3,593.52
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 Ohaus Voyager Pro Analytical Laboratory Balance VP64CN US $3,483.12
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 Ohaus Explorer Analytical Laboratory Balance EP214DCN US $3,342.36
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 Ohaus ExplorerPro Analytical Laboratory Balance EP114CN US $3,276.12
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 Ohaus Adventurer Pro Analytical Lab Balance AV264CR US $3,269.22
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 Ohaus ExplorerPro Analytical Laboratory Balance EP214DC US $3,229.00
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 Ohaus Explorer Pro Analytical Laboratory Balance EP214 US $3,222.30
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 Ohaus Explorer Pro Analytical Lab Balance EP214CN US $3,203.20
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 Ohaus Explorer Pro Analytical Laboratory Balance EP114C US $3,157.44
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 Ohaus Explorer Pro Analytical Laboratory Balance EP64CN US $3,055.32
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 Ohaus Adventurer Pro Analytical Lab Balance AV264R US $2,939.40
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 Ohaus Explorer Pro Analytical Laboratory Balance EP114 US $2,784.84
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 Ohaus Explorer Pro Analytical Lab Balance EP214DC US $2,772.00
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 Ohaus Adventurer Pro Analytical Lab Balance AV264C US $2,758.00
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 New Radwag AS 110 2Y Analytical Lab Balance 110g x 00001g Built In AutoCal US $2,299.00
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 Ohaus Adventurer Pro Analytical Lab Balance AV114C US $2,294.15
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 SCIENTECH SA120 ANALYTICAL LAB BALANCE US $2,275.00
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 Ohaus Adventurer Pro Analytical Lab Balance AV114CU US $2,244.00
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 Ohaus Adventurer Pro Analytical Lab Balance AV64R US $2,170.74
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 Ohaus Adventurer Pro Analytical Lab Balance AV114 US $2,119.05
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 Ohaus Adventurer Pro Analytical Lab Balance AV64C US $2,119.05
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 Ohaus AdventurerPro Analytical Laboratory Balance AV114 US $2,119.00
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 Ohaus AdventurerPro Analytical Laboratory Balance AV64C US $2,119.00
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 Ohaus Pioneer Analytical Laboratory Balance PA214 US $2,101.20
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 Ohaus Adventurer Pro Analytical Laboratory Balance AV64 US $2,087.35
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 Ohaus Adventurer Pro Analytical Lab Balance AV114U US $2,074.00
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 Ohaus Adventurer Pro Analytical Lab Balance AV64CU US $2,057.00
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 OHAUS EP413CN Analytical precision lab scale balance NEW US $1,999.95
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 METTLER TOLEDO AB204 Laboratory Analytical Balance 200gr US $1,955.00
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 New Intell Lab PA 200 Analytical Lab Balance 200 g x 01mg Full Warranty US $1,029.00
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 OHAUS EP613 Analytical precision lab scale Balance US $999.00
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Specifications Of Laboratory Scales
As the name suggests laboratory scales are used in schools or medical universities or scientific labs for research and development. Laboratory scales can be both for physical objects or chemical elements. They are used to measure with extreme precision the weight of an object (or its mass, if very small). Usually they have a beam with an attached pointer, a pivot that is essentially friction less and a measuring arm which has fractional weights. The pointer accounts for deviation from the balanced position. As the weight measurements need to be accurate the pan is usually sealed to keep it free of dust particles and moisture. Samples are kept at room temperature to prevent air from entering and bringing with it pollutants. . Even erroneous readings are part and parcel of laboratory scales. These can be caused by friction, gravitational changes, buoyancy, misalignment, evaporation and condensation and seismic disturbances.
Two basic types of laboratory scales will immediately be recognized by laboratory workers: analytical balances and top-loaders. Analytical balances have weigh pans enclosed and are divided into 2 more types: micro balances (accurate to 1 microgram and semi-microbalances (10 micrograms). Top loaders however weigh objects in pans on top of the instrument and give readings ranging from bottom hundreds of grams to several kilograms with accuracy of 1 mg or 0.1 mg. Top loading balances are convenient and quick but don't secure the objects against wind exposure which may lead to errors.
Laboratory scales have become pretty modern and usually have built-in functions for density computation, part counting, statistical study and other computations. Additional features may come at higher price. You have a choice of color screens and touch screens. Faster microprocessors give accurate readings and better repeatability. Hands-free operation gives convenience and saves time. Multiple interface options for connectivity which includes series, parallel, universal bus service (USB) and wireless. The interfaces should also be able to connect to the printer for readily available hard copy. Similarly regulatory compliances also guide the specifications which are very relevant for medical (pharmaceutical) purposes. Evaluations for laboratory scales come from Ingress Protection (IP), National Electronic manufacturers Association (NEMA), and certification from National Type Evaluation Program (NTEP).
There are various other kinds of laboratory scales. An equal arm balance is the simplest kind of beam balance with a uniform bar suspended at the center. An unequal arm balance is suspended off center. A spring balance has a coiled spring fixed to one end and a hook at the other end where weights are applied. Then there is the moisture balance which is used to calculate the moisture substance in a sample way, hence it needs to be very sensitive to the balance. A platform scale has 2 balances attached on opposite side of beam. Problems in repeatability come from changes in lab environments. Hence, you should go for a lab balance which is ahead by a safety factor of 2 or 3. All balances however have limited memory and data processing capabilities which are solved by ‘wedge' software packages that connect the instrument to the lab network for the purpose of automatic data entry.
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Chemistry help please!?
An analytical laboratory balance typically measures mass to the nearest 0.1 mg. What energy change would accompany the loss of 0.1 mg in mass?
Were you thinking of changing the mass into energy - ? If so then -look out ! !
Einstein discovered his Mass/Energy equation while working on Relativity:-
E = Mc^2
the speed of light = 299 792 458 m / s which is about = 3 x 10^8
0.1 mg = 1 x 10^ -7 Kg
So if the 0.1mg of mass just disappeared into energy the Energy lost would be
E = 3 x 10^8 x 3 x 10^8 x 1 x 10^-7
E = 9 x 10^9 Joules
[ Note the the standard unit of energy is the joule. You need 4.2 x 10^3 joules to heat one litre of water by one degree Celsius.]
So the Energy evolved would heat 1 Litre of water by 2 x 10^6 (2,000,000) 2 Million degrees .! !
Quite "Energetic" I would say .
Thermo Fisher Meets, but Lowers Outlook - Analyst Blog (Zacks)
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Analytical balance Sartorius CPA324S
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