When you're comparing lab balances scales, the decision often comes down to a tradeoff between readiness and sensitivity. Two used analytical balances offer very different answers: one is a 220g balance ready for the bench, the other is a semi-micro 120g instrument that needs repair before it can perform. Which one makes sense for your lab?
Quick verdict: If you need a balance you can use right away, the Citizen CX 220 is the clear choice-it powers on, zeros properly, and responds to weight at 0.1 mg readability, all for $699.99. If you need the finer 0.01 mg resolution of a semi-micro balance and are prepared to address a cracked draft shield, the Mettler Toledo MS105 offers that capability but requires work and an investment beyond its $789.00 price.
| Product | Price | Capacity | Readability | Condition |
|---|---|---|---|---|
| Citizen CX 220 | $699.99 | 220 g | 0.1 mg | Used, good cosmetic wear, powers on and zeros |
| Mettler Toledo MS105 | $789.00 | 120 g | 0.01 mg | Used, as-is, cracked draft shield |
Where each wins
The Citizen CX 220 wins on capacity and price. It gives you a 220 g weighing range compared to the Mettler's 120 g, and it costs $89 less. For labs processing larger samples or working with containers that add tare weight, that extra headroom can be the difference between weighing on the balance or switching to a less precise instrument. The unit's condition also stands out: it powers on, zeros to 0.0000 g, and reacts to weight.
The Mettler Toledo MS105 wins on sensitivity and design intent. Its 0.01 mg readability is finer than the Citizen's 0.1 mg, placing it in the semi-micro category. For applications that demand extra digits-like filter weights, very small samples, or gravimetric analysis near the method detection limit-that additional resolution is meaningful. However, that precision comes with a caveat: the draft shield housing is cracked, and the unit is sold as-is for parts or repair.
Citizen CX 220 Analytical Balance 220g x 0.1mg Precision Laboratory Scale
If you want a balance that is ready to go the moment it arrives, the Citizen CX 220 is the practical pick. Its 220 g capacity and 0.1 mg readability cover everyday analytical weighing tasks, and it powers on, zeros properly, and responds to weight. The glass draft enclosure and power adapter are present, so you can set it up without hunting for accessories. At $699.99, it also leaves more budget for calibration weights, weighing boats, or other lab essentials. The main limitation is its 0.1 mg resolution-if your method demands 0.01 mg precision, this balance will not get you there. It is also a used unit with normal cosmetic wear, so expect light marks and dust consistent with age.
Mettler Toledo MS105 NewClassic MF Semi-Micro Analytical Balance Scale 120g
If your protocol demands finer readability and you are comfortable performing or commissioning repairs, the Mettler MS105 offers a path to semi-micro capability. Its 0.01 mg resolution is the standout feature, and the 120 g capacity is sufficient for many analytical and semi-micro workflows. The MS105's electronics and internal mechanics function, but the draft shield housing has physical damage, and the unit is explicitly sold as-is for parts or repair. That means additional cost and downtime before it can be used. At $789.00, you are paying for the finer resolution and semi-micro design, but only you know whether the repair effort is worth it compared to a ready-to-run balance. If you lack repair resources, the savings from the Citizen may be more valuable than the extra digit.
Final choice by use case
For most labs needing a dependable analytical balance now, the Citizen CX 220 is the safer, more practical purchase: it has a higher capacity, a lower price, and it powers on, zeros correctly, and responds to weight. Choose the Mettler MS105 only if you specifically need 0.01 mg readability, have experience with balance repairs, and can absorb the extra cost and waiting time. Otherwise, the Citizen's ready-to-use condition makes it the better fit for the bench.
