KNODOS White Ceramic Coffee Dosing Cup and RDT Spray Bottle — Single Dose Measuring Tray

The KNODOS White Ceramic Coffee Dosing Cup and RDT Spray Bottle is a clean, minimal single-dose kit for weighing and transferring coffee beans before grinding. The smooth white ceramic cup holds 30g+ and sits flat on any scale, while the RDT spray bottle adds a fine mist to neutralize static before grinding. Less mess, less retention inside the grinder, and precise control over every dose. Works with any espresso grinder, single-dose grinder, or hand grinder.

Ceramic Dosing Cup

The cup is made from smooth white ceramic — easy to clean, does not absorb coffee oils, and does not stain over time. The wide, shallow shape makes it easy to tip beans into any grinder hopper or feed tube. It sits stable on a coffee scale for weighing and transfers beans cleanly without spilling.

RDT Spray Bottle

RDT — Ross Droplet Technique — is a quick spray of water on coffee beans before grinding. It neutralizes static electricity that causes grounds to cling to the burrs, chute, and dosing chamber. The included spray bottle produces a fine mist — one or two sprays per dose is enough. The water amount is too small to affect extraction or taste.

How to Use — Step by Step

1. Place the ceramic dosing cup on your coffee scale and tare to zero.

2. Weigh your desired dose of coffee beans into the cup.

3. Spray one or two mists of water onto the beans using the RDT bottle.

4. Tip the beans from the cup into your grinder.

5. Grind directly into your portafilter — the sprayed beans produce less static and fewer grounds stick inside the grinder.

6. Proceed with your espresso workflow.

Compatibility

Universal — works with any espresso grinder, single-dose grinder, or hand grinder. The cup fits on standard coffee scales including Acaia, Timemore, KNODOS Smart Scale, and similar models.

What's Included

• 1x KNODOS White Coffee Dosing Cup (ceramic, 30g+ capacity)

• 1x RDT Spray Bottle

Frequently Asked Questions

What is a dosing cup used for in espresso?

A dosing cup holds a pre-weighed amount of coffee beans before you grind them. It replaces the grinder hopper for single-dose workflows, giving you precise control over each dose and keeping beans fresh by not storing them exposed to air.

What does the RDT spray bottle do?

It sprays a fine mist of water on your beans to reduce static. Static causes ground coffee to cling to the inside of the grinder instead of falling into your portafilter. One or two sprays before grinding solves this.

Is the ceramic cup dishwasher-safe?

Yes. The ceramic cup can be cleaned in a dishwasher or rinsed by hand. It does not absorb coffee oils or odors.

Does RDT change the taste of coffee?

No. The amount of water is less than a single drop per dose. It has no measurable effect on extraction, flavor, or grind consistency.

Will this fit on my Acaia or Timemore scale?

Yes. The cup has a flat base designed to sit on standard coffee scales including Acaia, Timemore, KNODOS Smart Scale, and similar models.