Name: Member's Mark Chlorinating Granules, 40 lbs
Brand: Member's Mark
SKU: 15359760490
Availability: InStock
Rating: 4.7 (3828 reviews)

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Member's Mark Chlorinating Granules, 40 lbs

Instructions

<p>Member's Mark® Chlorinating Granules are a filler-free, completely soluble chlorinating granular formula that helps keep pool and spa water clean and fresh with a fast, measurable free chlorine boost.</p> <h3>Three-in-One Pool Care: Sanitizer, Algaecide, and Shock</h3> <p>This Step 2 treatment is a versatile option for ongoing water care and periodic treatment. It functions as a sanitizer, algaecide, and shock in one product to support clean, clear water.</p> <ul>  <li>Apply directly to circulating water to raise the free available chlorine level to 5-6 ppm (mg/L).</li>  <li>Works as an algaecide and shock to help address water that needs attention.</li>  <li>The formula is intended to help reduce chlorine odor as part of regular pool and spa maintenance.</li>  <li>Listed pH level range: 6.0 - 8.0.</li> </ul> <h3>Filler-Free Granules That Dissolve Completely</h3> <p>The filler-free formula means the product is made without added fillers that can contribute to unwanted residue. The granules dissolve completely for efficient distribution in circulating water.</p> <ul>  <li>Active ingredient: sodium dichloro-s-triazinetrione dihydrate.</li>  <li>Formulation type: granules (completely soluble).</li> </ul> <h3>Made for Pools, Spas, and Hot Tubs</h3> <p>Ideal for swimming pools, spas, and hot tubs, these granules offer a convenient single treatment to keep on hand for multiple backyard water features.</p> <ul>  <li>40 lb size for regular pool and spa routines.</li>  <li>Shelf life: 2 years (when stored properly).</li> </ul> <h3>Important Safety Information</h3> <ul>  <li>Warning: Corrosive.</li>  <li>Causes irreversible eye damage and skin burns.</li>  <li>Harmful if swallowed.</li>  <li>Keep out of reach of children.</li> </ul> <h3>Frequently Asked Questions</h3> <h4>What is Member's Mark Chlorinating Granules used for?</h4> <p>It’s for pool and spa water care and is described as a 3‑in‑1 product that acts as a sanitizer, algaecide, and shock.</p> <h4>Can I use Member's Mark Chlorinating Granules in a swimming pool, spa, or hot tub?</h4> <p>It’s ideal for use in swimming pools, spas, and hot tubs, and is designed to be compatible with most pools and spas.</p> <h4>What is the active ingredient in Member's Mark Chlorinating Granules?</h4> <p>Sodium dichloro-s-triazinetrione dihydrate.</p> <h4>Are these chlorinating granules soluble in water?</h4> <p>They are completely soluble.</p> <h4>What free available chlorine level does direct application target?</h4> <p>Direct application to circulating water raises free available chlorine to 5–6 ppm (mg/L).</p> <h4>Is Member's Mark Chlorinating Granules filler-free?</h4> <p>They’re described as entirely filler-free, intended to help avoid unwanted residue.</p> <h4>Does it affect pH or chlorine odor?</h4> <p>The product description says it reduces pH levels and eliminates chlorine odor.</p> <h4>What safety warnings apply to this product?</h4> <p>Corrosive; causes irreversible eye damage and skin burns; harmful if swallowed; keep out of reach of children.</p> <h4>What’s the shelf life of Member's Mark Chlorinating Granules?</h4> <p>Shelf life is 2 years.</p>

Brand

Product Net Content UOM

<ul>  <li><strong>Weight:</strong> 40 lb</li>  <li><strong>Item Form:</strong> Granules</li>  <li><strong>Active Ingredient:</strong> Sodium dichloro-s-triazinetrione</li>  <li><strong>Solubility:</strong> Completely soluble</li>  <li><strong>Shelf Life:</strong> 2 years</li>  <li><strong>Dimensions:</strong> 14 x 14 x 15 in</li> </ul> <hr> <ul>  <li>Member's Mark™ Chlorinating Granules - Step 2 for pool and spa chlorination</li>  <li>Ideal for use in swimming pools, spas, and hot tubs</li>  <li>Sanitizes water; add directly to circulating water to raise free available chlorine to 5-6 ppm (mg/L)</li>  <li>3-in-1 use: sanitizer, algaecide, and shock for routine care or when water needs attention</li>  <li>Filler-free, completely soluble granules to help avoid unwanted residue</li>  <li>Active ingredient: Sodium dichloro-s-triazinetrione dihydrate</li>  <li>2-year shelf life</li>  <li>Warning: Corrosive; causes irreversible eye damage and skin burns; harmful if swallowed; keep out of reach of children</li> </ul>

Specifications

<ul> <li><strong>Weight:</strong> 40 lb</li> <li><strong>Item Form:</strong> Granules</li> <li><strong>Active Ingredient:</strong> Sodium dichloro-s-triazinetrione</li> <li><strong>Solubility:</strong> Completely soluble</li> <li><strong>Shelf Life:</strong> 2 years</li> <li><strong>Dimensions:</strong> 14 x 14 x 15 in</li> </ul><hr><ul> <li>Member's Mark™ Chlorinating Granules - Step 2 for pool and spa chlorination</li> <li>Ideal for use in swimming pools, spas, and hot tubs</li> <li>Sanitizes water; add directly to circulating water to raise free available chlorine to 5-6 ppm (mg/L)</li> <li>3-in-1 use: sanitizer, algaecide, and shock for routine care or when water needs attention</li> <li>Filler-free, completely soluble granules to help avoid unwanted residue</li> <li>Active ingredient: Sodium dichloro-s-triazinetrione dihydrate</li> <li>2-year shelf life</li> <li>Warning: Corrosive; causes irreversible eye damage and skin burns; harmful if swallowed; keep out of reach of children</li> </ul>

Better price!  Chlorine has gotten so expensive.  There is no real reason for that now the plants are up and running.  Sam's club needs to sell it at 79.99 regular price.

lower the regular price.

We picked up Members Mark chlorine granules for our pool.  The price was great and the product was consistent in size.  We were grateful for this product as it helped save the day for our salt pool when our generator went out for a short period of time.  Sams Club to the rescue.

Easy measure, simple dissolve, consistent size

Since purchasing our pool, I have been purchasing the 1 pound packs of shock from an online retailer. I’ve been putting one or two of those in each time that I treat the pool. This year, I was not able to get that delivered so I purchased this product from Sam’s Club. I was amazed to find out that just 4 ounces covers a 10,000 gallon pool. That means this product is much cheaper than the 1 pound bags I was purchasing because of its concentration. The pool has been very clear since I began using this. I am so thankful for shortages and inconveniences.

Loving this product better than others I have used

I have been using this product for years, it keeps my pool's balanced and clean with less maintenance. However, what I'm only disappointed is the cost which doubled in the past three years, the inflation made me sick !!! Hope the price is brought down soon.

Good product but too costly

Pool needs

Excellent product. It does the same as the top brand produts for a cheaper prize. I'm happy with it!

Clean swimming pool

These have more than doubled in price. I realize the supply shortage and demand during the pandemic raised the price but the supply should be stable now and I feel it is greed either on the manufacturer or retailer or both that keeps the price so high. That’s the main reason for the inflation of many products. Just because they can!! The product is fine but the COST is NOT!

Bring the price down

I had a super hard time finding the chlorine in stock. I finally bought some for $199 / 40#. Then it goes on sale and they wouldn't do a price adjustment for me. They said I had to return and rebuy. Ridiculous!

Chlorine or gold

Great product, but way too expensive.  Used to be $90 and now it’s $200.  I heard there was a major chlorine tab supplier that burned down, but that was a few years ago, so don’t understand why the price has not come down

Great product, not so great price

When people buy shock, they don’t need cyanuric acid in their chlorine granules.  I bought and used this and my CYA levels skyrocketed.  I was growing algae and dumping more and more of this in the pool.  I finally realized I was chlorine locked and this was the problem.  Save yourself a headache.  Buy a CYA product, not this product.

Loaded with CYA - causes chlorine lock!

member's mark chlorinating granules, 40 lbs front-facing white plastic bucket with blue lid and large blue label showing Member's Mark logo, “Chlorinating Granules” text, Step 2 badge, warning text noting corrosive and keep out of reach of children, and net weight 40 lbs; suitable for use in pools, spas and hot tubs as a sanitizer and shock.

Member's Mark Chlorinating Granules, 40 lbs

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