What types of blockages is this duo unblocker suitable for?

This 2-component formula is designed for stubborn blockages in both kitchen drains (grease, food waste) and bathroom drains (hair, soap scum, toothpaste).

Is this unblocker safe for drain pipes?

Yes, the formula is safe for all standard waste pipes and does not damage plastic piping.

Do you need to dilute or mix the components before use?

No, both bottles are ready to use. Pour the specified doses directly into the blocked drain one after the other as instructed.

How long should the unblocker be left to work?

Leave the product to work for at least 1 hour. For very stubborn clogs, leave it overnight before rinsing thoroughly with water.

Does the product splash or fizz when poured into the drain?

No, thanks to the liquid formulation, the product does not bubble, fizz, or splash during application.

HG 343100103 duo plunger 2x 500 ml

Supplier number: HG 343100103 | EAN 8711577058418

13.82 tax incl.

€11.42 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 5 products in stock.

kit

Ordered before 20:00 - delivered as of 06/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
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Clear stubborn blockages with Hg duo ontstopper

Practical benefits

Powerful two-component action: You tackle stubborn blockages effectively using a dual formula designed to dissolve grease, food remnants, and hair.
Safe across all drains: You treat blockages throughout kitchen sinks and bathroom pipes without damaging common plumbing materials.
Ready to use directly: You pour the ready-to-use liquid safely into the drain without dangerous splashing or foaming during application.

In a nutshell

The right choise for

With the Hg duo ontstopper 2C. 2X 500 ml, you clear the most stubborn drain blockages quickly and effectively. The liquid two-component formula dissolves grease and food waste in the kitchen sink just as reliably as hair, toothpaste, and soap residue in the bathroom. Both ready-to-use bottles pour directly into the drain pipe without hazardous splashing, bubbling, or fizzing. The formula is safe for all standard waste pipes and will not damage plastic piping. Leave it to work for at least 1 hour or overnight, then rinse thoroughly to restore optimal water flow across your home.

Product information FAQ

€13.82

In stock - tax incl.

Key features according to our expert

Net volume: 2 x 500 ml
EUH-statements: EUH206
ADR packing group: II
ADR class: 8
Packaging: Bottle
Principal hazard property: GHS05 Corrosive
UN number: UN3267
P-statements: P101; P102; P264; P280; P301 + P330 + P331; P303 + P361 + P353; P305 + P351 + P338; P310; P405; P501
H-statements: H314; H318; H400; H410; H411
Hazard class: GHS05 Corrosive; GHS09 Environmental hazard
Physical state: Liquid

Product description

Extremely strong due to unique 2-component technology
For the most stubborn blockages

HG duo unblocker extremely strong has been specially developed for the most stubborn blockages in your kitchen or sanitary drain caused by grease and food residues, hair, toothpaste, soap residues and skin fats. HG duo unblocker extremely strong is based on a unique 2-component technology (bottle a and B) with which the various types of stubborn blockages can be purposefully and effectively remedied. Depending on the application, i.e. in kitchen drains or sanitary drains, a different dosage of bottle a and bottle B should be used. Therefore, follow the instructions for use exactly for best results.

Instructions for use

Please note: for all drains, always add the product from bottle a first and only then the product from bottle B. In the wrong order, the desired result will not be achieved.
Blockage in the kitchen
If there is water in the sink that no longer drains, first remove as much as possible
Carefully pour 1 part (see measuring marks on the bottle) of bottle a into the blocked drain
Then carefully pour 2 parts (see measuring lines on the bottle) of bottle B down the blocked drain and leave to work for at least 1 hour
The longer the soaking time, the more likely the clog will be cleared to the maximum extent
If possible, therefore, apply before going to bed so it can take effect throughout the night
Rinse with plenty of water
Then carefully pour the remainder (2 parts) of bottle a and then the remainder (1 part) of bottle B down the drain to obtain the best possible after-effects
Leave to work for 1 hour and rinse again with plenty of water
Blockage in plumbing
If there is water in the washbasin, shower tray or bath that no longer drains, first remove as much as possible
Carefully pour 2 parts (see measuring marks on the bottle) of bottle a into the blocked drain
Then carefully pour 1 part (see measuring marks on the bottle) of bottle B down the blocked drain and leave to work for at least 1 hour
The longer the soaking time, the more likely the clog will be cleared to the maximum extent
If possible, therefore, apply before going to bed so it can take effect throughout the night
Rinse with plenty of water
Then carefully pour the remainder (1 part) of bottle a and then the remainder (2 parts) of bottle B down the drain to obtain an optimal after-effect
Leave to work for 1 hour and rinse again with plenty of water

Precautionary statements

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P264: Wash ... (see safety data sheet) thoroughly after handling.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water (or shower).
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310: Immediately call a POISON CENTER/doctor/…
P405: Store locked up.
P501: Dispose of contents/container to ... (see safety data sheet).

Hazard statements

H314: Causes severe skin burns and eye damage.
H318: Causes serious eye damage.
H400: Very toxic to aquatic life.
H410: Very toxic to aquatic life with long lasting effects.
H411: Toxic to aquatic life with long lasting effects.

Supplemental hazard information

EUH206: Warning! Do not use together with other products. May release dangerous gases (chlorine).

All Features

Net volume: 2 x 500 ml
Euh-statements: EUH206
Adr packing group: II
Adr class: 8
Packaging: Bottle
Principal hazard property: GHS05 Corrosive
Un number: UN3267
P-statements: P101; P102; P264; P280; P301 + P330 + P331; P303 + P361 + P353; P305 + P351 + P338; P310; P405; P501
H-statements: H314; H318; H400; H410; H411
Hazard class: GHS05 Corrosive; GHS09 Environmental hazard
Physical state: Liquid

Brand HG
08123499
EAN 8711577058418
Supplier number HG 343100103

Frequently asked questions about this product

Answered by specialists

What types of blockages is this duo unblocker suitable for?: This 2-component formula is designed for stubborn blockages in both kitchen drains (grease, food waste) and bathroom drains (hair, soap scum, toothpaste).
Is this unblocker safe for drain pipes?: Yes, the formula is safe for all standard waste pipes and does not damage plastic piping.
Do you need to dilute or mix the components before use?: No, both bottles are ready to use. Pour the specified doses directly into the blocked drain one after the other as instructed.
How long should the unblocker be left to work?: Leave the product to work for at least 1 hour. For very stubborn clogs, leave it overnight before rinsing thoroughly with water.
Does the product splash or fizz when poured into the drain?: No, thanks to the liquid formulation, the product does not bubble, fizz, or splash during application.