Hanna Phosphorus Checker - Low Range
Hanna Phosphorus Checker - Low Range
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Product Description
Product Description
Hanna Phosphorus Checker - Low Range
The Hanna Phosphorus Checker - Low Range HI736 is a marine ultra-low range phosphorus colorimeter for saltwater aquariums, giving a digital result in parts per billion rather than relying on visual colour comparison. It is a strong choice for reef aquariums where very low nutrient levels need to be monitored with better resolution than standard phosphate test kits.
HI736 Ultra Low Range Phosphorus Testing
The HI736 measures phosphorus from 0 to 200 ppb with 1 ppb resolution. Because many reef keepers track phosphate rather than phosphorus, the HI736 result can be converted to ppm phosphate by multiplying ppb phosphorus by 3.066 and dividing by 1000.
Low Range Phosphorus Checker Features
- Designed for saltwater aquariums and marine applications.
- Measures ultra-low phosphorus levels for reef nutrient control.
- Digital readout reduces visual interpretation errors.
- Uses an adaptation of the ascorbic acid method.
- Dedicated single-parameter checker keeps testing simple and repeatable.
- Compact handheld format stores easily with reef test kits.
- Works with Hanna HI736-25 Marine Phosphorus ULR replacement reagents.
- Calibration check set HI736-11 is available separately for validation.
Hanna HI736 Specifications
- Part Number: HI736
- Product type: Marine phosphorus ultra low range handheld colorimeter
- Range: 0 to 200 ppb phosphorus
- Resolution: 1 ppb
- Accuracy at 25°C / 77°F: ±5 ppb ±5% of reading
- Light source: LED at 525 nm
- Light detector: Silicon photocell
- Method: Adaptation of the ascorbic acid method
- Battery type: 1 x 1.5V AAA battery
- Auto shut-off: After two minutes of non-use
- Dimensions: 86.0 x 61.0 x 37.5 mm / 3.4 x 2.4 x 1.5 in
- Weight: 64 g / 2.3 oz
- Replacement reagent set: HI736-25
Official Hanna HI736 Video
Using the Hanna Low Range Phosphorus Checker
Use clean saltwater samples, keep cuvettes free of fingerprints and bubbles, and follow Hanna’s reagent timing carefully. Compare results consistently over time, especially when adjusting feeding, phosphate media, refugium growth, or other nutrient export methods.
What's Included
- HI736 Phosphorus Ultra Low Range Checker HC
- 2 sample cuvettes with caps
- Marine phosphorus ULR reagent starter kit for 6 tests
- Battery
- Instructions
- Quick start guide
Shipping Info
Shipping Info
FREE SHIPPING OVER $119!*
- does not apply to livestock -
$11.99 FLAT RATE FOR LESS THAN $119.00 - CANADA WIDE!
*EXCEPTIONS:
- Any heavy or bulky items will incur a 100% charge of the actual shipping cost (valid for both Canada and the US). Heavy bulky items include (but are not limited to): salt, dry rock, sand, chillers, sumps, aquariums, stands, and some filter media.
- Frozen or perishable food can only be shipped via UPS Express. We have discounted the express shipping of these items to help the hobbyist out.
- Livestock is covered by a different shipping policy. To view the policy and further information regarding shipping livestock, click here.
GENERAL NOTES:
- We always make our best effort to ship your order via the carrier chosen during the check-out process; however, for some multi-piece shipments and/or remote destinations, we must reserve the right to use another carrier at our discretion (and without prior notice). If you require notice of any changes made to the carrier, please mention it in the special instructions during check-out.
- Upon request, we will ship your dry goods as per your specifications (courier, airlines, on your account, etc.).
- Quoted rates are the carriers live discounted shipping rates after adjusting for any/all shipping promotions.
Returns / Exchanges
Returns / Exchanges
Return Policy — Aquarium Equipment & Supplies
- All returns and/or exchanges must be made within 30 days of receipt of product.
- Before returning or exchanging any goods, you must contact J&L Aquatics to obtain a Return Merchandise Authorization (RMA). Items returned without prior authorization will be declined.
- Returned items must be unused, in original packaging, in as-new condition, and in perfect sellable condition. All returns are subject to inspection upon receipt.
- A 15% restocking fee applies to all online returns. This fee includes the cost of outbound shipping.
- Customer is responsible for return shipping costs on standard returns.
- Order cancellations made before shipping are not subject to a restocking fee.
Non-Returnable Items
- Special order items
- Clearance / final sale items
- Open box items
Regular sale items (non-clearance) are returnable within the 30-day return window, subject to our standard return conditions.
Defective, Warranty & DOA Items
- If you receive an item that is defective, not working, or dead on arrival (DOA), please contact us as soon as possible.
- Confirmed defective and warranty returns have no restocking fee and no Affirm fee. Customer does not pay return shipping — J&L Aquatics will provide a prepaid return label.
- All defective claims are subject to inspection. Items showing signs of customer damage, improper installation, or misuse are not covered under warranty.
Carrier Damage & Lost in Transit
- If your order arrives damaged by the carrier or is lost in transit, please contact us right away with:Photos of the damaged product (if applicable)Photos of the damaged box/packaging (if applicable)A description of the issue
- Important — Do not throw out any packaging! Please keep all original packaging, boxes, and packing materials. These are required to process your claim. Discarding packaging may affect our ability to resolve your claim.
High-Value Items ($100+)
- For items valued at $100 or more, customers must provide a return tracking number before a replacement will be shipped.
Affirm & Financing Orders
- Affirm or similar financing orders that are cancelled or returned in-store are subject to a 5% service charge. This covers the processing fee charged to us by the financing provider.
- The Affirm service charge does not apply to confirmed defective or warranty returns.
J&L Aquatics strives to maintain the lowest prices economically possible. In most cases we have the lowest price in the Canadian marketplace, but in the rare occasion that we do not, please feel free to contact us at 604-444-1161 or through e-mail to discuss an opportunity to price match.
