KNODOS Black Coffee Dosing Cup and RDT Spray Bottle — Single Dose Bean Cup, Static Reduction

The KNODOS Black Coffee Dosing Cup and RDT Spray Bottle is the best-selling dosing set in the KNODOS range. The matte black cup holds 30g+ of beans for precise single-dose weighing, and the RDT spray bottle adds a fine mist of water to neutralize static before grinding. The result is less mess, less grinder retention, and exact control over every gram that goes into your shot. Works with any grinder, any portafilter size, and any scale. No machine-specific sizing required.

How It Works

Scoop or pour your beans into the dosing cup. Place the cup on your scale and weigh to your target dose. Give the beans one or two sprays with the RDT bottle. Tip the beans into your grinder. The entire process takes seconds and gives you exact control over every gram that goes into your shot.

Why RDT Makes a Difference

Static electricity builds up during grinding and causes fine coffee particles to stick to the burrs, the chute, and the walls of the dosing chamber. This means less coffee ends up in your portafilter and more ends up trapped inside the grinder. A quick spray of water before grinding neutralizes this static almost entirely — grounds fall cleanly through the grinder with minimal retention. Less waste, less cleanup, more consistent doses.

Matte Black Dosing Cup

The cup has a 30g+ capacity — enough for a double espresso dose or a single filter dose. The matte black finish looks clean next to dark espresso machines and does not show coffee stains or fingerprints. The wide, shallow shape sits flat on a scale and tips beans into any grinder opening without spilling.

RDT Spray Bottle

A compact spray bottle that produces a fine mist with a single pump. Fill with tap water. One or two sprays per dose — just enough to neutralize static without wetting the beans. The amount of moisture is too small to affect grind size, extraction, or taste.

How to Use — Step by Step

1. Place the matte black 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 — less static means cleaner transfer.

6. Proceed with your espresso workflow.

Compatibility

Universal — works with any grinder, any portafilter size, any scale. The dosing cup fits on standard coffee scales from Acaia, Timemore, KNODOS, and similar brands.

What's Included

• 1x KNODOS Black Coffee Dosing Cup (30g+ capacity)

• 1x RDT Spray Bottle

Frequently Asked Questions

Why is this the best-selling dosing set?

It solves two common problems in one affordable package — inconsistent dosing and grinder static. Most home baristas deal with both issues daily. The dosing cup gives precise control over every dose, and the RDT bottle keeps grounds from sticking inside the grinder.

Is the matte black finish durable?

Yes. The finish does not show coffee stains or fingerprints. Wipe it down or rinse under water after use.

Do I need an RDT spray if my grinder already has low retention?

Low-retention grinders still build up static, especially in dry environments. RDT helps regardless of grinder quality — it reduces the amount of grounds that stick to any surface inside the grinder.