---
product_id: 6228747
title: "Roebic HD-CRY-DO-6 2-Pound Heavy Duty Crystal Drain Opener"
brand: "roebic"
price: "S$53"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/6228747-roebic-hd-cry-do-6-2-pound-heavy-duty-crystal
store_origin: SG
region: Singapore
---

# 100% Sodium Hydroxide Power Fast-Acting Formula Heavy Duty Tough Clog Solution Roebic HD-CRY-DO-6 2-Pound Heavy Duty Crystal Drain Opener

**Brand:** roebic
**Price:** S$53
**Availability:** ✅ In Stock

## Summary

> 🔥 Clear your drains, clear your schedule!

## Quick Answers

- **What is this?** Roebic HD-CRY-DO-6 2-Pound Heavy Duty Crystal Drain Opener by roebic
- **How much does it cost?** S$53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/6228747-roebic-hd-cry-do-6-2-pound-heavy-duty-crystal)

## Best For

- roebic enthusiasts

## Why This Product

- Trusted roebic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Smart Choice:** Economical alternative to frequent bottled drain cleaners
- • **Save Time & Money:** Clears tough clogs quickly to avoid costly plumbing repairs
- • **Precision Use Only:** Safe for most pipes—avoid aluminium, lead, zinc, or galvanized metals
- • **Keep Drains Flowing:** Prevents recurring blockages for long-lasting pipe efficiency
- • **Melt Grease Like Magic:** Professional strength lye formula dissolves stubborn kitchen grease fast

## Overview

Roebic HD-CRY-DO-6 is a 2-pound heavy duty crystal drain opener featuring 100% sodium hydroxide for powerful, fast-acting grease and clog removal in kitchen sinks. Designed for professional strength performance, it efficiently melts tough blockages to restore optimal water flow, saving time and costly repairs. Not suitable for toilets, garbage disposals, or certain metal pipes.

## Description

Product Description               Combat tough kitchen sink grease and pipe clogs with our Roebic Crystal Drain Opener! Our drain line cleaner features a quick-acting professional strength formula which contains sodium hydroxide and is 100% Lye, which works to melt grease and clear out tough clogs to restore water flow to your kitchen sinks and pipes. Our clogged drain solution provides an economical way to maintain your sink drains, eliminating the need for continuous expense on bottled drain cleaners and preventing costly repairs. Not for toilet use or garbage disposal use. Avoid use with aluminium, lead, zinc, or galvanized pipes. By opting for this crystal lye drain opener, users can enjoy the peace of mind that comes with a fast-acting, reliable drain unclogger, designed to restore pipes to peak efficiency.                  From the Manufacturer               Heavy duty crystal drain opener contains 100% sodium hydroxide (caustic soda; lye) and clears tough clogs from pipes and drains. Melts and destroys grease, other kitchen clogs and will keep drains clear.

## Features

- Ideal for kitchen clogs. Melts grease, keeps drains clear, tackles tough kitchen blockages
- Professional Strength Crystal Drain Opener clears tough clogs from pipes and drains, saving you time and money
- 100% Lye. Contains sodium hydroxide. Not for use in toilets or garbage disposals. Avoid use with aluminium, lead, zinc, or galvanized pipes
- Follow label instructions for optimal results with Roebic Heavy Duty Crystal Drain Opener
- Contains 100% sodium hydroxide for powerful clog-clearing action. Keep drains and pipes free-flowing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Roebic Laboratories |
| Part Number | HD-CRY-DO |
| Item Weight | 2 pounds |
| Product Dimensions | 2.25 x 4.5 x 7.75 inches |
| Country of Origin | China |
| Item model number | HD-CRY-DO |
| Is Discontinued By Manufacturer | No |
| Size | 100% Lye |
| Color | Black |
| Material | Plastic |
| Item Package Quantity | 1 |
| Included Components | 2-Pound Heavy Duty Crystal Drain Opener |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Roebic
- **Scent:** Unscented
- **Item Weight:** 2 Pounds
- **State of matter:** Solid
- **Product Benefits:** Cleans Drain, Eliminates Odor, Melts grease, clears clogs, and keeps drains clear, Removes Clog

## Images

![Roebic HD-CRY-DO-6 2-Pound Heavy Duty Crystal Drain Opener - Image 1](https://m.media-amazon.com/images/I/71CNm2YzEbL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: The bottle says 100% lye, and reviewers have said the msds sheet confirms, but when i look at the msds it states 96-100%. did it change? or what gives**
A: 96% is about right for industrial-grade chemicals.  To get 100% you need reagent grade and will pay for it.  So this is lye suitable for non-technical purposes.

**Q: Is this cleaner harmful to plastic drain pipes?**
A: In the short term probably not because there is no warning on the container about such a risk.  Plus, when I make soap, I dissolve the lye in a plastic bucket, one that I have dedicated to lye solution for soapmaking.  I have used the same bucket for a number of years, with no holes forming in it.  It is possible that over a period of decades it might be affected.  However, when I make lye solution for soapmaking, the solution sits in the same bucket for at least 30 minutes, sometimes longer, whereas drain cleaners are meant to go in and do their job, then get flushed away.  So I believe it is highly likely that this drain cleaner will not harm plastic drain pipes.

**Q: Will this product kill the good bacteria in the septic system?**
A: It is likely that Roebic lye crystals will kill the good bacteria in a septic system.  It would depend on how much lye you pour down the drain or toilet, and the size of your system, and possibly other factors.  I am fairly certain I have read more than once that lye is not to be used in septic systems which rely on living organisms to break down sewage.
If it is too late and you have used it and killed the living organisms, there is a product you can buy that is supposed to help recolonize or repopulate the system with good microorganisms.  Rid-X is one such product.  Good luck.

**Q: How many cups are in this 60 ounce container?**
A: According to my scale: 
1 cup of Roebic lye crystals weighs 9.6 ounces (oz)
2 cup Roebic lye crystals weighs 19.2 ounces (oz)
so 60 ounces (oz) should give you 6.25 cups.

## Frequently Bought Together

- Roebic HD-CRY-DO 2 Pounds Professional Strength Crystal Drain Opener, 100% Lye, Black
- Roebic K-97 Main Line Cleaner: Exclusive Bacteria Digests Paper, Fats, and Grease in Sewer and Septic Systems - 32 Ounces, Liquid
- Roebic FRK-1LB Foaming Root Killer: Clear Pipes, Stop New Growth, Safe for All Plumbing - 1lb, White, Granules

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-27*