Description
Pocket electronic scale with a measuring range of 200 g and a readability of 0,01 g (10 mg), featuring a tare function (TARE) and piece counting (PCS). An auxiliary device for working with small quantities — not a chemical reagent or an analytical standard, just a measuring instrument. AAA batteries are included — the scale is ready to use straight out of the box.
Technical Data Sheet
| Device type | electronic pocket scale |
|---|---|
| Measuring range (max. load) | 200 g |
| Readability (display resolution) | 0,01 g (10 mg) |
| Measurement error in factory tests | ±40 mg (±0,04 g) |
| Calibration certificate | none — factory calibration only |
| Functions | TARE, piece counting (PCS), auto-calibration on power-up, backlight, Auto-OFF |
| Units of measurement | g, oz, ct, tl, gn — switched with a single button |
| Display | backlit LCD |
| Power supply | 2 × AAA battery (included) |
| Auto power-off | approx. 30 seconds of inactivity |
| Dimensions | approx. 120 × 62 × 20 mm |
| Additional accessories | universal cover (sensor protector / stand) |
What It Is Used for When Working with Chemical Reagents
In this shop we offer chemical reagents in packages measured in milligrams and grams — from 1000 mg (1 g) upward. A pocket scale of this type is often used for checking a shipment on receipt (verifying that the declared net mass matches the contents of the package) and for roughly dividing a larger weighed portion into smaller working portions when preparing stock solutions in the laboratory. The TARE function allows the mass of the container — a vial, a paper sachet — to be subtracted, so that only the net mass of the material is read.
Whether a resolution of 0,01 g is sufficient for a given use depends on the size of the portion being weighed — the smaller the portion, the larger the percentage share of the ±40 mg measurement error:
| Package size | Share of measurement error (±40 mg) | Suitability of this scale |
|---|---|---|
| 1000 mg (1 g) — smallest package in the catalog | approx. 4% | sufficient for receipt checks, not for analytical weighing |
| 5 g | approx. 0,8% | good — measurement error is marginal |
| 100 g | approx. 0,04% | very good |
For the smallest package offered (1000 mg), the measurement error amounts to approx. 4% of the total mass — this is sufficient for a receipt check, but not for weighing that requires documented analytical accuracy; analytical balances of a higher class, calibrated and verified, are intended for that purpose. For packages of several grams and above, the share of the error falls below 1%.
Accuracy vs. Resolution — What a 0,01 g Readability Means Alongside a ±40 mg Error
These are two different parameters and it is worth telling them apart. Readability (display resolution) is the smallest change in mass that the display is able to show — 0,01 g on this model. Measurement error is the maximum deviation of the reading from the actual mass — in factory tests, using reference weights, it amounted to ±40 mg, i.e. four times more than the readability itself.
| Parameter | Value | What it means in practice |
|---|---|---|
| Readability | 0,01 g | the smallest change in reading that the display will show |
| Measurement error (accuracy) | ±40 mg | the maximum deviation of the reading from the actual mass in factory tests |
In other words: the display can show a change of 0,01 g, but the reading itself may differ from the actual mass by more than a single readability step. This is typical of pocket scales of this class and is what distinguishes them from analytical balances, whose measurement error is close to the size of the readability step.
What Affects Accuracy During Use
The ±40 mg value given above comes from factory tests carried out right after production, under controlled conditions. It is not a guarantee that the same accuracy will be maintained throughout the entire period of use. The measurement result can be affected by:
- improper use — overloading beyond 200 g, drops, impacts;
- fluctuations in temperature and air humidity;
- surface vibration and drafts at the weighing location;
- natural wear of the electronic components over time.
Recalibration and Verification
The scale performs auto-calibration on power-up, but this is an internal function of the device — it does not replace verification with certified reference weights. The device is not accompanied by a calibration certificate. For applications requiring documented, repeatable accuracy, we recommend periodic verification of the readings using certified reference weights.
Scale Functions
TARE — Net Weighing in Any Container
Place an empty container — a vial, a sachet, a small dish — on the scale and press the TARE button. The display resets to zero, subtracting the mass of the container. The next reading shows only the net mass of whatever is added afterward. The function works regardless of the container material, as long as the total mass (container plus contents) stays within the 200 g range.
PCS — Piece Counting
The piece-counting function estimates the number of identical small items based on the average mass of a reference sample — useful for taking inventory of small parts (screws, beads, balls) of similar unit mass. The accuracy of the count depends on the uniformity of the mass of the individual pieces and is subject to the same measurement error as standard weighing.
Units of Measurement
The scale switches with a single button between five units: grams (g), ounces (oz), carats (ct), troy pounds (tl), and grains (gn). Useful when working with materials traditionally priced in units other than grams — for example, gemstones in carats.
Power Supply, Display, and Included Accessories
The device is powered by two AAA batteries, included in the set — the scale is ready for use straight out of the box. The backlit LCD display provides a clear reading even in poor lighting. Auto power-off after approx. 30 seconds of inactivity saves the batteries. The set also includes a universal cover, which protects the weighing sensor during transport and can serve as an additional stand while weighing. Its compact dimensions (approx. 120 × 62 × 20 mm) make it possible to carry the scale in a pocket or a small bag.
Other Names for This Type of Scale
This same type of device is searched for under various names, depending on the buyer’s field:
- pocket scale or handheld scale — the most common name, referring to its size;
- jewelry scale or gold scale — in the context of weighing metals and gemstones;
- precision scale 0,01 g or mini electronic scale — in the context of the resolution parameter;
- pocket laboratory scale — this name can be misleading, since it suggests a higher accuracy class than this model actually offers (see the accuracy section above);
- scale with TARE function or scale with piece counting — in the context of a specific function.
Storage and Handling
Store the scale in a dry place, away from heat sources and direct exposure to moisture; between weighings it is worth using the included cover to protect the sensor. Do not overload beyond the 200 g range — overloading is one of the main causes of the loss of accuracy described above. The weighing location should be stable, level, and shielded from drafts and vibration (e.g. from nearby operating equipment) — both factors directly affect the repeatability of the reading. Clean the weighing plate with a dry, soft cloth; avoid letting the electronics come into contact with moisture and solvents. For longer periods without use, we recommend removing the batteries to prevent leakage.
Uses Beyond Laboratory Work
Thanks to its versatile range and TARE function, the scale is also used outside the laboratory context:
- jewelry making and goldsmithing — approximate weighing of precious metals, stones, and small items of jewelry (a legally verified scale is required for commercial valuation — see the section below);
- numismatics — weighing and documenting the mass of coins and medals;
- modeling and DIY — resins, pigments, small components;
- household uses — precise measuring of ingredients using the TARE function and g/oz units.
Calibration Status and Limitations of Use
The device was factory-calibrated using reference weights — the ±40 mg measurement error value given above comes from those tests. The scale is not accompanied by a calibration certificate and it is not legally verified for use in trade with consumers within the meaning of the weights-and-measures regulations in force in Poland. Its readings are of an approximate, indicative nature.
For applications requiring documentable, repeatable accuracy — for example analytical weighing or documentation consistent with good laboratory practice — an analytical balance of an appropriate class, verified by an accredited laboratory, should be used instead. This model is an auxiliary, handheld-class device, not a replacement for an analytical balance.
Frequently Asked Questions
Is a calibration certificate included with the scale?
No. The scale is factory-calibrated using reference weights, but it is not accompanied by a calibration certificate or legal verification. The ±40 mg measurement error value comes from factory tests, not from independent certification.
What is the difference between a 0,01 g readability and a ±40 mg measurement error?
Readability is the smallest change in reading that the display will show. Measurement error is the maximum deviation of the reading from the actual mass — on this model, four times larger than the readability itself. These are two different parameters, both described in the technical data sheet above.
Is this scale suitable for weighing chemical reagents from this shop?
For checking a shipment on receipt and for roughly dividing a weighed portion — yes. However, for the smallest package (1000 mg) the ±40 mg error amounts to approx. 4% of the mass, so an analytical balance of a higher class is needed for weighing that requires documented analytical accuracy.
How does the TARE function work?
Place an empty container on the scale, press TARE, and the display resets to zero. The next reading shows only the net mass of the contents added to the container.
How does the piece-counting function (PCS) work?
The scale estimates the number of identical small items based on the average mass of a reference sample. The accuracy depends on the uniformity of the mass of the individual pieces and is subject to the same measurement error as standard weighing.
Which units of measurement does the scale support, and how do you switch between them?
Five units: grams (g), ounces (oz), carats (ct), troy pounds (tl), and grains (gn), switched with a single button.
Are batteries included, and what type?
Yes — two AAA batteries, included in the set. The scale is ready for use straight out of the box.
After how long does the scale switch off automatically?
After approx. 30 seconds of inactivity, which saves the batteries.
Can this scale be used in trade, for example for selling goods by weight?
No. The device does not have the legal verification required for scales used in trade with consumers. It is intended for laboratory, hobby, and indicative use.
How do you maintain the scale’s accuracy over time?
Do not overload beyond 200 g, protect it from drops and moisture, weigh on a stable, level surface, away from drafts and vibration. For applications requiring documented accuracy, periodic verification of the readings with certified reference weights is recommended.
Related Reagents in Our Catalog
- Modafinil (CAS 68693-11-8) — a reagent available from a 1000 mg package; at this portion size, the measurement error of this scale (±40 mg) amounts to approx. 4% of the mass, which is sufficient for a receipt check but not for analytical weighing.
- Bromantan (CAS 87913-26-6) — also available from 1000 mg upward; the same resolution limitations described in the accuracy section apply when working with this reagent.
- Flmodafinil (CAS 90280-13-0) — a comparable range of packages from 1000 mg; for larger portions (from several grams), the share of this scale’s measurement error falls below 1%.
Statement of Intended Use
The product offered is a measuring device (an electronic scale) intended for laboratory, analytical, hobby, and household use. It is not a chemical reagent, a medicinal product, a dietary supplement, a food product, or a medical device. The device does not have a calibration certificate and is not legally verified for use in trade with consumers within the meaning of the weights-and-measures regulations. The scale’s readings are of an indicative nature and are subject to the measurement error described in the technical data sheet above; for applications requiring documentable accuracy, periodic calibration using certified reference weights, or the use of a higher-class analytical balance, is recommended. The buyer is responsible for choosing a device appropriate to the intended use.
