List Price: $24.99
Sale Price: $15.59
You save: $9.40 (38%)

See Reviews For This Product

Description

Ideal for all basic water testing applications. The best value meter in the world! .. Economy model that is ideal for end-users. .. Highly efficient and accurate due to its advanced microprocessor technology. .. Hold Function: saves measurements for convenient reading and recording. .. Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. .. Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. .. Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. ...

Features

• Economy model that is ideal for end-users.
• Highly efficient and accurate due to its advanced microprocessor technology.
• Hold Function: saves measurements for convenient reading and recording.
• Auto-off function: the meter shuts off automatically after 10 minutes of non-use.
• Measurement Range: 0-9990 ppm. Display: large and easy-to-read LCD screen.

List Price: $31.99
Sale Price: $16.99
You save: $15.00 (47%)

See Reviews For This Product

Description

The Milwaukee Instruments pH Pen, PH600 is an easy to use pH meter. It features +- 0.2 Accuracy, one-point calibration and a long battery life (hours of continuous use). Calibration solution not included.

Features

• Includes protective cap
• Includes calibration screwdriver
• Batteries included
• Instructions included

Sale Price: $7.11

See Reviews For This Product

Description

This digital pen style pH meter is an ideal instrument for aquarium, fishing industry, swimming pool, school laboratory, beverage etc.Features: Weight: 65gSize: 15 x 3 x 1.5 cmMeter with protective plastic case and calibration screwdriverExcellent meter, very accurate and durableMeasuring pH Range: 0.0 - 14.0 pH Resolution: 0.1 pHAccuracy: ±0.1 pH (20°C), ±0.2 pHOperating Temperature: 0 - 50°C (32 - 122°F) Relative Humidity:95%Calibration: manual,1 pointPlease calibrate with the buffer solution before use

Features

• This digital pen style pH meter is an ideal instrument for aquarium, fishing industry, swimming pool, school laboratory, food & beverage etc.
• Meter with protective plastic case and calibration screwdriver. Excellent meter, very accurate and durable
• Measuring pH Range: 0.0 - 14.0 pH. Resolution: 0.1 Ph. Accuracy: ±0.1 pH (20°C), ±0.2 pH
• Operating Temperature: 0 - 50°C (32 - 122°F). Relative Humidity:95%. Calibration: manual,1 point
• Package Content: 1 x pH Meter, 1 x Screw Driver, 3 x AG 13 Button Cell Batteries (included), 1 x Instruction Manual ( English), 1 x Card Reader

List Price: $14.98
Sale Price: $3.98
You save: $11.00 (73%)

See Reviews For This Product

Sale Price: $89.92

See Reviews For This Product

Description

This guide offers methods for growers who want to maximize the yield and potency of their crop. It explains the “Screen of Green” technique that gives a higher yield using fewer plants, an important development for American growers who, if caught, are penalized according to number of plants. The Cannabis Grow Bible is an authoritative source that features almost 200 color and black-and-white photographs, charts, and tables. With an emphasis on the day-to-day aspects of maintaining a garden and European expertise, this book ensures that growers will enjoy a successful harvest.

List Price: $50.00
Sale Price: $14.98
You save: $35.02 (70%)

See Reviews For This Product

Description

Empowers You to Save Hundreds on Electric Bills Electricity bills are rising. Now you can cut down on costs and find out what appliances are actually worth keeping plugged in. Simply connect these appliances to the Kill A Watt, and it will assess how efficient they really are. The large LCD display counts consumption by the kilowatt-hour, the same as your local utility. You can calculate your electrical expenses by the day, week, month, even an entire year. Also check the quality of your power by monitoring voltage, line frequency, and power factor. Now you will know if it is time for a new refrigerator or if that old air conditioner is still saving you money. Kill A Watt can help you reduce your power bill and will help find power-wasting appliances so you are able to decide whether it is worth keeping them plugged in. For standard 115 VAC appliances only, 15 amps maximum, 125 VAC maximum. Find Out How Much Electricity You're Using Large LCD display counts consumption by the kilowatt-hour The U.S Department of Energy reports that 20% of our electric bills come from items that are left plugged in when they are not in use, or items that are in standby mode. With the Kill A Watt P4400 we can monitor the energy eaters in our homes and cut down our electric bills at the same time. Plug whatever item you want into the device and it will tell you the efficiency of that item by displaying the kilowatt per hour. This device will help you determine which items are costing you the most to run. The Kill A Watt also calculates voltage, line frequency, current, and power factor. You can calculate your electric bill before you even receive it from the electric company. Test The Quality of Your Home's Power But measuring appliance consumption is just the tip of the iceberg. Because it can monitor voltage (Volt) and line frequency it can also test if an outlet is working, or evaluate the quality of the electrical power provided by your utility company. It can detect voltage drops around the house, help to predict brownout conditions or to make sure a new home's outlets are in working condition before escrow closes. The LCD shows all meter readings: volts, current, watts, frequency, power factor, and VA About P3 International Founded in 1987, P3 International is a privately owned manufacturer of solution oriented consumer products. For the last twenty years they have strived to develop products that are easy to use and ahead of their time. Thanks to their customer-centric attitude and support from their clients, they have experienced steady growth over the past decade. They are committed to manufacturing high quality products that appeal to a variety of different people, from the environmentally conscious to the more technologically-minded consumer. With this philosophy driving them they are always looking for innovative new products which they can offer their customers. Their unique products have garnered much attention, in particular the Kill A Watt. Reviews of P3 products have been featured in newspapers such as The New York Times and The Wall Street Journal. Technical Specifications Accuracy: +/- 0.2% Input Power: 115 volts AC, 60 Hz Max Current: 15 amps Max Voltage: 125 volts Max Power: 1875 VA Dimensions: 5.1 inches long x 1.6 inches thick x 2.4 inches wide Approvals: ETL (c), ETL (us) Origin: China Manufacturer Warranty: 6 months

Features

• Electricity usage monitor connects to appliances and assesses efficiency
• Large LCD display counts consumption by the kilowatt-hour
• Calculates electricity expenses by the day, week, month, or year
• Displays volts, amps, and wattage within 0.2 percent accuracy
• Compatible with inverters; designed for use with AC 115-volt appliances

List Price: $13.99
Sale Price: $3.74
You save: $10.25 (73%)

See Reviews For This Product

Description

Provides 10 tests for pH. Patented comparator test system.

Features

• Luster Leaf
• 1612
• Seed Starting

List Price: $44.95
Sale Price: $23.10
You save: $21.85 (49%)

See Reviews For This Product

Description

Dehumidifier BenefitsThe high capacity dehumidifier has been designed to absorb moisture from small enclosed areas. It will help protect clothes and valuables from the damaging effects of mold / mildew and moisture rot. It is 100% renewable and needs no power to operate. Just hang the eva-dry unit in a closet, or you can place it in other small enclosed spaces, and it will start absorbing moisture immediately. There are no batteries required or cords to plug in, the unit works without power.DetailsThere is an indicator window with special "moisture meter crystals" that change from blue (when dry) to pink (when wet) to indicate when the unit needs to be "renewed". The unit will absorb approximately 8-10 ounces of moisture (depending on humidity levels this should take approximately 4-8 weeks). Once the moisture has been adsorbed it cannot leak or spill. This unit uses a specialized engineered crystallized silica gel that is odorless, non-toxic and completely safe. When the indicator crystals turn pink it is time to "re-new" the unit. Simply remove the unit from where it is absorbing moisture and plug it into a power outlet in a well ventilated area (bathroom with extraction fan, garage, outside, etc.) There is a built in heater that will warm the crystals allowing them to expand and release the moisture as water vapor into the outside air. It takes about 12-14 hours to completely re-new the unit. When it is completely renewed the indicator crystals will change back to blue. The unit is brand new again and ready to absorb another 8-10 ounces of moisture. The crystals will remain active for 10 years and we offer a 5 year limited manufactures warranty on all EDV-500 units.Eva-Dry High Capacity DehumidifierEVD-500Size: 8" x 2.5" x 5.5"Color: Off White

Features

• Works in a 500 cubic ft. area
• No batteries or cords required
• 100% renewable -- works up to 10 years
• Compact and silent
• Spill and mess free
• Non-toxic -- child and pet safe

List Price: $77.95
Sale Price: $56.07
You save: $21.88 (28%)

See Reviews For This Product

Description

Model T75 Waterproof TDS tester with automatic temperature compensation and 1 point manual calibration range: 0.0 to 1999 ppm (mg/L), replaceable MA73075 probe.

Features

• pH Electrode with Built in Temperature Sensor
• Replaceable electrode
• IP67 Waterproof casing
• Automatic Temperature Compensation
• Easy to use. Replacement electrode available.

List Price: $28.50
Sale Price: $19.95
You save: $8.55 (30%)

See Reviews For This Product

Description

6700K Daylight WhiteExcellent choice for plant tanks, freshwater or reef aquariumsIntense, full spectral output essential for the growth of plantsthis lamp provides a crisp daylight white look that replicates the midday sun1.5 in. W x 21 in. L x 1 in. H Hamilton Compact Fluorescent lights supply the most concentrated light intensity, color spectrum and wavelength essential for photosynthesis and coral health.

Features

• 6700K Daylight White
• Excellent choice for plant tanks, freshwater or reef aquariums
• Intense, full spectral output essential for the growth of plants
• this lamp provides a crisp daylight white look that replicates the midday sun
• 1.5 in. W x 21 in. L x 1 in. H Hamilton Compact Fluorescent lights supply the most concentrated light intensity, color spectrum and wavelength essential for photosynthesis and coral health.