Digital scale

Specifications

Description

A digital scale measures the mass of dry aquarium plant nutrients when a dosing recipe calls for a quantity in grams. It can be used to prepare a stock solution or weigh an individual portion. The amount to add comes from the selected nutrient recipe; the scale supplies a measurement, not a dosing recommendation. Choose capacity for the total load, including the weighing container. Pocket scales suit small trays, while a larger platform is useful for containers that would overhang or touch the work surface. Compare the accuracy, repeatability and minimum usable load needed for your smallest portion as well as the maximum load. More displayed decimal places alone do not establish better accuracy. The MAXUS Gold example is rated for 200 g with a 0.01 g display increment and has a tare function. It supports grams, ounces, grains, troy ounces, carats and pennyweights; select grams for a recipe expressed in grams. The 0.01 g figure is readability, not proof of a +/-0.01 g error limit or a reliable 0.01 g minimum sample. Place the scale on stable support away from drafts. Put the empty container on the platform and tare it before adding the material; the container still counts towards capacity. Check the model instructions for calibration and the required reference weight. A calibration weight cannot be chosen from the scale's maximum capacity alone.

Sources

• aquatic-gardeners.org — https://www.aquatic-gardeners.org/GregWatsonDosingGuide.pdf
• awscales.com — https://awscales.com/american-weigh-scales-blog/supplements-scale-buying-guide-accuracy-capacity-and-calibration/
• amazon.com — https://www.amazon.com/dp/B09T65LZTT

Further reading on identification and aquarium care.