Weighing Equipment For Laboratory And Quality Control
A quality laboratory has two weighing problems: reading finely enough to prove the tolerance, and proving the balance itself is still right. This page covers both, with analytical and precision balances on one side and the class E2 to M2 weights that check them on the other.
What Goes Wrong In This Industry
- Balances specified at a readability too coarse for the tolerance being checked
- Results retyped by hand because the balance has no data output
- Analytical readings drifting from draughts and bench vibration
- No in house weights, so a balance stays suspect until the next service visit
What Buyers Actually Need
- Readability at least ten times finer than the tolerance under test
- A draft shield on anything reading 1 mg or finer
- Data output where results feed a laboratory system
- Weights of the correct class to verify between service visits
Products That Suit This Industry
FA Analytical Balance
Four model analytical balance series reading to 0.1 mg with RS232C output.
View specifications →
LA High Precision Analytical Balance
Electromagnetic force compensation balance at 0.0001 g with eight weighing unit modes.
View specifications →LAC Internal Calibration Precision Balance
Precision balance with automatic internal calibration, 110 g to 210 g at 0.0001 g.
View specifications →
LDT Strain Load Cell Balance
Economical strain load cell balance, 200 g to 1200 g at 0.1 g, with counting.
View specifications →
Stainless Steel Cylindrical Test Weight Set
Cylindrical calibration weight sets in stainless steel and chrome plated finishes, E2 to M2.
View specifications →
Cast Iron Block Test Weights
Cast iron block weights with cut out handles for floor scale and weighbridge verification.
View specifications →Where Weighing Happens On Site
Incoming material checks
Sample material weighed against a supplier certificate before a batch is released to production.
Formulation
Small additions of additive or pigment weighed on a precision balance at the formulation bench.
Daily balance verification
A class E2 or F1 weight placed on the balance at the start of each shift to confirm it has not drifted.
Industrial scale verification
Class M1 cast iron blocks used to check platform and floor scales after relocation.
How We Specify For This Industry
Define the smallest tolerance
Everything else follows from the finest measurement the laboratory has to prove.
Pick readability
Aim for readability ten times finer than that tolerance, which usually means 0.1 mg for analytical work.
Control the environment
Draft shield, stable bench, no direct air conditioning flow across the pan.
Set a verification routine
Choose weight classes that match each instrument and record a check at a fixed interval.
Delivery Capability
- Balances and their verification weights ship on the same order
- RS232C output on analytical models for data capture
- Delivery normally under 15 days
- Courier shipping for laboratory sized consignments
Related Guides
Calibrating Scales With Test Weights
Official verification happens once a year. Everything in between is your own responsibility, and it takes a set of weights and twenty minutes.
OIML R60 Accuracy Classes Explained For Scale Builders
Every load cell datasheet in this catalogue is a table of accuracy classes. This is how to read the columns and turn them into a decision.
Laboratory And Quality Control Questions
Which balance readability do I need?
Work back from the tightest tolerance you must prove and choose a readability at least ten times finer. For 1 mg tolerances use a 0.1 mg analytical balance such as the FA series.
Which weight class verifies an analytical balance?
E2 or F1 depending on the balance readability and your internal procedure. Send us the balance model and readability and we will confirm the class.
Can balance results be exported?
The analytical models list an RS232C output interface. Tell us what system you are connecting to so we can confirm cable and settings.
Do you supply weights for industrial scales too?
Yes. The same catalogue covers cast iron block weights in M1 and M2 for floor scales and weighbridges.
Specify Weighing For Laboratory And Quality Control
Send the weighing points on your site and the conditions around them. We will map the right products against each one.