Water pressure settings let you control the force of the water spray produced by the water flosser. If you are new to water flossing, start at the lowest pressure setting, then increase over time to your preferred level.

Depending on the model, countertop water flossers offer 3, 6, or 10 pressure settings ranging from 10–90 or 10-100 PSI. Cordless water flossers include 2 or 3 pressure settings from 45–75 PSI.

The size of the water reservoir depends on the design and type of water flosser. Cordless water flosser reservoirs hold up to 7 ounces, while countertop water flossers hold up to 35 ounces.

Flossing time per full reservoir varies based on the pressure setting and the size of the reservoir. General guidelines are:

- 150ml (5 ounces) = 30+ seconds of flossing time

- 210ml (7 ouncesl) = 45+ seconds of flossing time

- 450ml (15 ounces) = 60+ seconds of flossing time

- 650-1000ml (22-35 ounces) = 90+ seconds of flossing time

You can refill the reservoir to extend flossing time.

If any liquid remains in the reservoir when you are finished water flossing, empty the liquid into the sink and allow it to dry.

For hygienic storage, countertop water flosser reservoirs either include a lid or act as a cover when inverted over the unit.

You can add a small amount of mouthwash to the water in the reservoir. (Do not exceed a 1:1 ratio of water to mouthwash). Rinse the unit afterwards by partially filling the reservoir with plain warm water and running it with the tip pointed into the sink.

To remove a water flosser tip, press the tip eject button built into the handle of the unit. When you insert a tip into the handle, make sure it clicks into place.

Unless otherwise specified, Waterpik® Water Flossers sold in the Singapore are compatible with 230VAC/50Hz electrical outlets.

Waterpik® Water Flossers have removable tips so that different family members can use the same device. A ring at the base of the tip is color-coded for easy identification.

All water flossers incorporate an on/off power button built into the unit.

Advanced countertop and combination units also include an additional water control on the handle that allows you to temporarily pause or stop the water flow while the unit is running.

On most water flosser models, the base that holds the tip rotates so you can more easily position the tip to reach all areas of the mouth. Use your thumb as needed to rotate the base as you water floss.