If you need to weigh up to 5000g with 0.01g readability, the Bonvoisin, RUISHAN, or Srora models fit. The Bonvoisin has the largest pan and 13 units. The RUISHAN includes calibration weights. The Srora needs a 2kg weight for recalibration. For smaller jobs up to 1000g, the SASVY and MEIYA come with a 100g calibration weight and batteries. The main tradeoff is capacity versus included calibration weight.
Bonvoisin 5000g Lab Scale
Best for: Weighing larger items up to 5000g in labs or schools.
- Reads 0.01g across ranges up to 5000g with external calibration.
- Large 180x140mm stainless steel pan fits multiple items.
- Converts among 13 units including g, ct, oz, and lb.
Keep in mind: Calibration weights not included for the 5000g model.
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RUISHAN 5000g Lab Scale
Best for: Users who want calibration weights included with a 5000g capacity.
- Includes calibration weights in the package.
- Large 170x170mm stainless steel pan and LED display.
- Preheating time 5 to 30 minutes, stabilization within 5 seconds.
Keep in mind: RS232 interface present but data line not included.
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SASVY 1000g Lab Scale
Best for: Portable use away from power outlets with batteries included.
- Weighs up to 1000g with 0.01g accuracy and includes 100g calibration weight.
- Backlit LCD display and tare, counting, and unit conversion functions.
- Powered by 2 AAA batteries, so no power cord needed.
Keep in mind: Capacity limited to 1000g, so not for heavy samples.
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Srora 5000g Lab Scale
Best for: Weighing up to 5000g when you already have a 2kg calibration weight.
- Factory calibrated and ready to use; recalibration needs a 2kg weight.
- 175x165mm stainless steel pan and 13 unit conversions.
- Horizontal bubble and adjustable feet for accurate setup.
Keep in mind: No calibration weight included; you must supply a 2kg weight.
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MEIYA 1000g Lab Scale
Best for: Counting small parts or weighing up to 1000g with included calibration weight.
- Weighs 0.3g to 1000g in 0.01g increments with a single sensor.
- 7 unit conversions and PCS counting for beads or screws.
- Includes 100g weight and 2 AAA batteries.
Keep in mind: Capacity limited to 1000g, so not for heavier lab samples.
Check price on Amazon ↗Product names and images come from the Amazon listings and are rechecked against them (last checked Nov 8, 2026). The highlights restate each listing's own bullet points as published on Nov 8, 2026. Prices change often, so we do not show them. These are affiliate links: as an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Capacity and Readability
All five listings state 0.01g readability, but maximum capacity splits them into two groups. The Bonvoisin, RUISHAN, and Srora scales go up to 5000g. The SASVY and MEIYA stop at 1000g. If you routinely weigh containers, large samples, or multiple items at once, a 5000g scale avoids overloading.
Readability is the smallest change the display can show. A 0.01g readability on a 5000g scale means the display shows two decimal places in grams. On a 1000g scale, the same readability gives finer relative resolution. For very light items like small jewelry or powders, either group works, but a lower capacity scale may be easier to read for tiny changes.
Consider what you weigh most often. A 5000g capacity is useful for lab batches, while a 1000g scale is easier to move and often comes with a calibration weight. The Bonvoisin listing notes its range starts at 200g, so very light items below 200g are not covered. The MEIYA listing states a range starting at 0.3g, which suits very small samples.
- 5000g capacity: Bonvoisin, RUISHAN, Srora.
- 1000g capacity: SASVY, MEIYA.
- All list 0.01g readability, but minimum weight differs.
| Model | Capacity | Readability | Calibration Weight Included | Display Type | Power Source | Pan Size |
|---|---|---|---|---|---|---|
| Bonvoisin 5000g | 5000g | 0.01g | No (for 5000g) | LCD | Not listed | 180x140mm |
| RUISHAN 5000g | 5000g | 0.01g | Yes | LED | Not listed | 170x170mm |
| SASVY 1000g | 1000g | 0.01g | Yes (100g) | Backlit LCD | 2 AAA batteries | Diameter 4.9 inch |
| Srora 5000g | 5000g | 0.01g | No | Not listed | Not listed | 175x165mm |
| MEIYA 1000g | 1000g | 0.01g | Yes (100g) | LCD | 2 AAA batteries | Not listed |
Calibration and Accuracy
Calibration keeps a scale accurate over time. The listings differ in what they include. The RUISHAN 5000g scale includes calibration weights. The SASVY and MEIYA 1000g scales each include a 100g calibration weight. The Bonvoisin 5000g listing says calibration weights are not included for the 5000g model because heavy weights might damage the scale in shipment.
The Srora 5000g listing says the scale is factory calibrated and ready to use. If recalibration is needed, you need a 2kg weight, which is not included. The listing suggests using a 2kg weighted object like bottled water as an alternative. That is a practical workaround if you do not have a certified weight.
Some listings mention external calibration. The Bonvoisin and RUISHAN listings both state external calibration. The SASVY listing says the scale can be calibrated. The MEIYA listing says it comes factory calibrated and includes a weight for subsequent calibration help. Check the listing for calibration steps before you buy.
Accuracy also depends on setup. Several listings mention adjustable feet and a level bubble. The Bonvoisin, RUISHAN, Srora, and SASVY listings all note these features. A level surface matters for repeatable results. The MEIYA listing mentions a leveling function and antislip bottom corners.
- Included calibration weights: RUISHAN, SASVY, MEIYA.
- No included weight: Bonvoisin (5000g), Srora.
- Srora suggests using a 2kg weighted object as an alternative.
Display and Functions
All five scales have digital displays, but the type varies. The Bonvoisin and MEIYA listings state LCD displays. The RUISHAN listing states a high definition LED display. The SASVY listing states a backlit LCD screen for low light. The Srora listing does not state the display type.
Functions go beyond basic weighing. The Bonvoisin listing lists tare, memory, counting, and fault visualization. The RUISHAN listing mentions a built in counting function to total multiple pieces automatically. The SASVY listing includes tare, precise weighing, piece counting, and unit conversion. The MEIYA listing adds display lock, auto power off, low power alarm, and overload alert.
Unit conversion is common. The Bonvoisin and Srora listings both state 13 units: g, ct, oz, ozt, N, lb, dr, GN, dwt, %, t/T, T, T/A/R. The RUISHAN listing mentions grams, ounces, carats, and pounds. The SASVY listing lists oz, g, ct, dwt, tl, gn, ozt. The MEIYA listing supports 7 units: oz, g, ct, dwt, tl, gn, ozt.
If you need a specific unit like troy ounces or pennyweight, check the listing. Not all scales include every unit. The Bonvoisin and Srora have the widest range.
- LCD: Bonvoisin, SASVY, MEIYA; LED: RUISHAN; Srora not stated.
- Counting function: Bonvoisin, RUISHAN, SASVY, MEIYA.
- 13 units: Bonvoisin, Srora; fewer units on others.
Power and Portability
Power source matters if you work away from an outlet. The SASVY and MEIYA listings state they run on 2 AAA batteries, and both include batteries. That makes them easy to move. The Bonvoisin, RUISHAN, and Srora listings do not state a power source, so you may need to check the listing or assume a power cord.
Portability also depends on size and weight. The 1000g scales are likely smaller and lighter, though the listings do not give dimensions for all models. The SASVY listing mentions a weighing plate diameter of 4.9 inches. The MEIYA listing does not state pan size. The 5000g scales have larger pans, which adds bulk.
If you need to weigh in the field or in different rooms, a battery powered scale is more convenient. The SASVY listing says it is perfect for mobile or outdoor applications. The MEIYA listing also highlights battery power and auto power off to save energy.
For a fixed lab bench, a corded scale may be fine. The Bonvoisin listing mentions a charger in the warranty note, suggesting it uses a power adapter. The RUISHAN listing says it does not include batteries, implying it may need a separate power source. Confirm before buying.
- Battery powered with batteries included: SASVY, MEIYA.
- Power source not stated for Bonvoisin, RUISHAN, Srora.
- Bonvoisin warranty mentions a charger, so likely corded.
Who Should Skip These
If you need legal for trade or certified weights, none of these listings state certification for commercial transactions. They are for lab, school, jewelry, or kitchen use. Check local regulations before using any scale for selling by weight.
If you need to weigh very heavy items over 5000g, none of these models fit. Look at bench scales or platform scales with higher capacities. Also, if you need readability finer than 0.01g, such as 0.001g, these are not suitable.
If you need a scale with a built in printer or data logging, the listings do not mention those features. The RUISHAN has an RS232 interface but no data line included. You would need to buy a separate cable and software.
If you want a scale that is waterproof or washdown rated for dusty or wet environments, the listings do not state those ratings. For harsh industrial use, look for IP rated scales.
- Not for commercial trade unless certified separately.
- Not for over 5000g capacity.
- Not for readability finer than 0.01g.
- No built in printer or data logging stated.
What to Confirm Before Buying
Check the calibration weight situation. Some scales include a weight, others do not. The Bonvoisin 5000g and Srora do not include one. If you need to recalibrate, you must have the correct weight. The Srora listing specifies a 2kg weight.
Confirm the power source. The SASVY and MEIYA use AAA batteries and include them. For the others, check whether a power adapter is included or sold separately. The RUISHAN listing says batteries are not included, but does not state if an adapter is included.
Check the minimum weight. The Bonvoisin listing says its range starts at 200g, so it cannot weigh very light items below that. The MEIYA listing states a range starting at 0.3g. If you weigh tiny samples, choose a scale with a low minimum.
Look at the pan size if you weigh bulky items. The Bonvoisin pan is 180x140mm, RUISHAN 170x170mm, Srora 175x165mm. The SASVY pan is a 4.9 inch diameter circle. The MEIYA pan size is not listed. Make sure your containers fit.
Read the full listing for warranty and support. The Bonvoisin and RUISHAN listings mention 1 year warranties. The Srora listing says support replies within 24 hours. The SASVY and MEIYA listings do not state a warranty period, so confirm with the seller.
- Calibration weight included or required?
- Power source: batteries, adapter, or both?
- Minimum weight and pan size for your samples.
- Warranty terms and support contact.
How We Put This Shortlist Together
We compared only the details stated in each product listing. No units were handled by us. We looked at capacity, readability, calibration, display, functions, power, and pan size. The listings provide enough information to separate the models.
We chose a spread of designs and sizes. Two 1000g scales with included calibration weights and batteries, and three 5000g scales with different calibration approaches. This gives you options whether you need portability or higher capacity.
The table in the capacity section shows what each listing states. Where a listing does not state a feature, we wrote Not listed. That helps you see gaps you may need to ask the seller about.
For more on what separates a lab scale that reads true from one that drifts, see the selection guide linked here: What Separates a Lab Scale That Reads True From One That Drifts.
Questions About Choosing a Digital Lab Scale
Do I need a calibration weight with a 0.01g lab scale?
It depends on the model. Some listings include a calibration weight, like the RUISHAN, SASVY, and MEIYA. Others, like the Bonvoisin 5000g and Srora, do not include one. If your scale drifts or you move it, you will need a weight to recalibrate. Check the listing for the required weight size.
Is a 1000g scale enough for lab work?
For many small samples, yes. A 1000g capacity with 0.01g readability works for jewelry, small powders, and counting parts. But if you weigh containers, large batches, or multiple items at once, a 5000g scale gives more headroom. Consider your typical maximum load plus the weight of any container.
What is the difference between LCD and LED displays on these scales?
The listings state different display types. LCD screens often have a backlight for low light, as the SASVY listing notes. LED displays may be brighter but can consume more power. The RUISHAN listing states a high definition LED display. Both show readings clearly, but backlighting can help in dim rooms.
Which Lab Scale Fits Your Weighing Needs
For a lab bench that handles up to 5000g and needs a calibration weight included, the RUISHAN 5000g Lab Scale is the pick. Its listing states calibration weights come in the package, and the large 170x170mm pan suits chemicals and powders. For someone who weighs small items away from an outlet, the SASVY 1000g Lab Scale is a better fit. It includes a 100g calibration weight and two AAA batteries, and the backlit LCD helps in low light. The tradeoff is capacity: 1000g versus 5000g.
About this guide. The picks were chosen by comparing the listing details for capacity, readability, calibration, display, functions, power, and pan size across a spread of designs and sizes. No units were handled by us; the comparison relies only on the listing text and does not use any in person measurements.