The HANNA HI 721 Checker®HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 721 Checker®HC is accurate and affordable with immediate results.
The new HI 721 Checker®HC portable handheld colorimeter features a resolution of 0.01 ppm (500 points) and ±0.04 ppm ±2% of reading accuracy. The HI 721 Checker®HC uses an adaptation of Standard Method 315 B.
The contoured style of this Checker®HC fits in your palm and pocket perfectly and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.
The HI 721 Checker®HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the HI 721 Checker®HC, press the button and read the results. It’s that easy.
Order Information: HI 721 Checker®HC is supplied with sample cuvettes with caps (2), powder reagents for iron (6), battery and instructions.
Specificationn :
| Range | 0.00 to 5.00 ppm (mg/L) | |
| Resolution | 0.01 ppm (mg/L) | |
| Accuracy @ 25°C | ±0.04 ppm ±2% of reading | |
| Light Source | LED @ 525 nm | |
| Light Detector | silicon photocell | |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing | |
| Battery Type | (1) 1.5V AAA | |
| Auto-off | after three minutes of non-use and ten seconds after reading | |
| Dimensions | 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”) | |
| Weight | 64 g (2.25 oz.) | |
| Method | adaptation of the EPA Phenantroline method 315 B, for natural and treated waters. |
Fast Shipping and Professional Packaging
We can offer a variety of shipping options thanks to our long-term relationship with UPS FedEx DHL. Our warehouse staff will package all goods to our exacting requirements. Prior to shipping, your goods will be thoroughly examined and securely secured. We deliver to thousands of customers every day from all over the world. This is a sign of our determination to be the largest online retailer in the world. Warehouses and distribution centers are located throughout Europe as well as in the USA.
Note: Orders that contain more than one item will be assigned a separate processing time for each item.
Prior to shipment, we examine the items ordered thoroughly before sending the items. Most orders are shipped within 48 hours. The expected delivery time is 3 to 7 days.
Returns
The stock is constantly changing and cannot be fully controlled by us due to the involvement of many different parties, such as the factory and our warehouse. The levels of stock can change at any moment. You may not receive your order once the order has been made.
The policy is 30 days. If it's been longer than 30 days since you made your purchase and we're unable to offer you a complete exchange or refund.
To be eligible for a return your item must be unused and in the same condition as you received it. You must have the item in its original packaging.
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