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Best Low Hardness

Pool Mate 1-2825 Calcium Increaser for Swimming Pools 25-Pound

  • Low calcium hardness level can cause corrosive water.
  • Prevents the staining or etching of your pool's surface.
  • Ideal Calcium Hardness range 200 - 400ppm.
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Robelle 2808B-02 Calcium Hardness Increaser for Swimming Pools, 16 Pounds

  • Low calcium hardness level can cause corrosive water.
  • Prevents the staining or etching of your pool's surface.
  • Ideal Calcium Hardness range 200 - 400ppm.
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Pool Mate 1-2825B Pool Calcium Increaser, 25-Pounds (Bag)

  • Low calcium hardness level can cause water issues.
  • Prevents the staining or etching of your pool's surface.
  • Ideal calcium hardness range 200 - 400ppm.
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TAYLOR TECHNOLOGIES INC K-1770 TEST KIT CALCIUM HARDNESS

  • Low calcium hardness level can cause corrosive water.
  • Prevents the staining or etching of your pool's surface.
  • Ideal Calcium Hardness range 200 - 400ppm.
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Hach Company AquaChek Total Hardness Test Strips 561220 Bundle with Exclusive Water Chemistry Log 1

  • Test Strip Measures Total Hardness test strip measures calcium and magnesium. Bundle with exclusive Destroyer 8 x 5 water chemistry log.
  • Tests: Low Range Total Hardness, High Range Total Hardness.
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HTH 67042 Calcium Hardness Up Balancer for Swimming Pools, 4 lbs

  • BENEFITS: Ensures that your swimming pool has a balanced calcium hardness so you can enjoy splashing in the water all season long in healthy water.
  • USE: Apply to pool following instructions for easy DIY pool care.
  • For best results, use with other HTH pool care products.
  • COMPATIBILITY: Great for vinyl-lined pools and saltwater systems.
  • Reduces corrosiveness of water with low calcium.
  • Avoid damage to pool surfaces and equipment.
  • INCLUDES: One 4-lb container of Calcium Hardness Up granules for your swimming pool water.
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1/4-20 THD.472 Lg, Self Tapping Thread Inserts, Steel (1 Each)

  • HIGH QUALITY: Made of high quality stainless steel, it is of high hardness and low abrasion..
  • FEATURE: With certain elasticity and even load, it is resistant to vibration to avoid loosening. Greatly improve strength and stability of screws connection..
  • GOOD CHARACTER: Solid, is not easy to slick, deep thread, uniform force, no burr in thread, clear and tidy..
  • EASY TO USE: Easy and quick to install with only one assembly tool. It can also repair the damaged thread by install it into thread hole..
  • APPLICATION: It enjoys a reputation in manufacturing fields such as aviation, automobiles, steam turbines, electronic communications, computers, lamps, molds, mechanical equipment, radiators, and semiconductor equipment..
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If You Give a Mouse a Pumpkin

  • Tests tap water and freshwater aquariums for general hardness (gh) and carbonate hardness (kh)..
  • Helps detect stress on fish caused by rapid ph shifts, which result from low kh levels and helps aquarists duplicate the nat..
  • All items are brand new, never worn and never used. We guarantee the authenticity of all items..
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PFERD 34218 Vitrified Bond Mounted Point, Silicon Carbide, Shape W222, 1\ Diameter x 2\ Length, 1/4\ Shank, 15900 RPM, 30 Grit (Pack of 10)

  • Made of grey silicon carbide in a vitrified bond.
  • Hardness grade r mounted point is ideally suited for heavy-duty edge grinding on castings.
  • It is distinguished by their high edge-holding capability, long service life and low wear.
  • Due to their special edge-holding properties, hardness grade r mounted point can also be used economically with low rpm power tools.
  • Measures 1-inches diameter by 2-inches length.
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YFYIQI Surface Mould Hardness Tester Meter Tool HC Unit for The Hardness Testing of Wet Mold Sand Mold in High Pressure Molding

  • Small size, easy to use in narrow spaces, can test at any angle, even upside down..
  • The leeb hardness tester can realize the mutual conversion between six kinds of hardness (HL, HRC, HRB, HB, HV, HS)..
  • Able to store 50 groups including single measured value, impact direction, material and hardness scale etc..
  • The test results can be displayed repeatedly, and gross errors can be deleted..
  • Low battery indication. Manual or automatic power off..
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Smooth-On Silicone Mold Making Liquid Rubber OOMOO 30 Easy to Use - Trial Size 2.8 lb 3 Pack

  • MIX RATIO: 1A:1B BY VOLUME - Easy to use silicone rubber compound features a convenient one-to-one by volume mix ratio, no scale is necessary....
  • SHORE A HARDNESS: 30 - This scale measures the hardness of flexible rubber molds. A 30A hardness is in the soft to medium soft range, between the....
  • POT LIFE: 30 MINUTES, CURE TIME: 6 HOURS - This product cures at room temperature with negligible shrinkage. Best to store at room temperature, see....
  • LOW VISCOSITY FOR EASY MIXING AND POURING - Great for making simple one- or two-piece block molds, no vacuum degassing is necessary.
  • PERFECT FOR ART AND INDUSTRIAL APPLICATIONS - Often used for molds to reproduce sculptures and other prototypes, casting plaster, resins, and wax.
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Sapphireman Sapphire Screen Protector for iPhone 14 Pro Max 6.7″, Anti-scratch Sapphire Full Screen Protector Edge to Edge 1 Pack, HD

  • 【Genuine Sapphire】This iPhone 14 Pro Max sapphire screen protector is cut from a single piece of sapphire, 99.99% pure, not coated..
  • 【 Mohs 9 Hardness】The sapphire protector has super scratch resistance, second only to diamond, Mohs hardness level 9, can withstand the scratches of knives, keys and other metals..
  • 【 Ultra Thin 】 The entire iPhone 14 Pro Max sapphire screen protector is only 0.23 mm = 0.009 inch..
  • 【 Low Friction 】Low friction coefficient, accurate operation for wonderful gaming experience. High density, excellent stain resistance..
  • 【Super Heat Dissipation】Sapphire screen has a natural ice feel, and the heat dissipation capacity is 20 times that of tempered glass..
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Heater Element, Stainless Steel Electric Heater Element, Mini Boiler Hot Water Coffee Immersion Heater Element for Household, Office, University Dorm, Travel Use, 600W 220V

  • ​Made of stainless steel material, rust resistant, high hardness, heat resistant, safe and ensure healthy and clean water.
  • Quick and safe to heat water, very convenient to use.
  • High working efficiency and low energy consumption.
  • Moderate size is ideal to heat water or coffee in the cup or tea kettle.
  • Suitable for household, office, university dorm or travel use.
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