Hanna HI97715 Ammonia Medium Range Photometer 0-10 mg/L

Hanna HI97715 Ammonia medium range portable photometer

The Hanna HI97715 is a pocket-sized, single-parameter photometer built for ammonia testing on wastewater and process streams where values run up to about 10 mg/L. With a 0.00 to 10.00 mg/L span it sits between the low-range HI97700 and the 100 mg/L HI97733, which makes it the practical default for raw and partly treated wastewater. Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer; we quote the HI97715 to industrial and laboratory buyers across Oman and the GCC.

The model number follows Hanna’s HI977xx pattern for dedicated photometers: the last digits identify the chemistry, so HI97715 always means ammonia medium range and cannot be reconfigured for another analyte. Reagents carry their own HI93xxx codes, listed below, and must be ordered separately from the meter.

HI97715 technical specifications

How the HI97715 measurement works

The Nessler reagent turns the sample yellow to brown in proportion to ammonia content. The HI97715 measures how much 420 nm light the reacted sample absorbs after being zeroed on the plain sample, so sample colour or slight turbidity present before reagent addition is compensated in the blank.

Inside the case a reference detector tracks the LED output, so battery sag or a warm ambient does not move the blank. A lens gathers the light leaving the cuvette, which is why scratches and small glass imperfections matter less than with a simple colorimeter, and the cap notch locks the cuvette in the same orientation every time. A built-in tutorial mode walks the operator through sampling, reagent quantity and timers on screen, so the instrument can be handed to a technician who is not a chemist.

Reagents, procedure and interferences for HI97715

Ten millilitres of sample go in the cuvette, the meter is zeroed, then four drops each of reagents A and B are added with five inversions after each, followed by a 3 minute 30 second countdown.

Reagent sets are supplied as HI93715-01 (100 tests) and HI93715-03 (300 tests). Follow the zeroing order given in the manual for this method, and read within the time the manual allows after the countdown ends.

Known interferences listed for this method:

• Hardness above 1 g/L
• Iron
• Sulfide, which may cause turbidity
• Acetone above 0.1 %, alcohols, aldehydes, aliphatic and aromatic amines, chloramines, glycine or urea above 10 mg/L; distillation removes these

Where the HI97715 sits among Hanna photometers

Where a stream swings between a few mg/L and tens of mg/L, many sites keep two meters: the HI97715 for routine work and the HI97733 for concentrated reject streams. The HI97700 is better for final-effluent and receiving-water checks below 3 mg/L.

Selection and ordering checklist for HI97715

• Verify normal readings fall between about 0.5 and 10 mg/L
• Order HI93715-01 or HI93715-03 reagent sets separately
• Decide on CAL Check cuvettes HI97715-11 for validation records
• Plan to dilute samples that exceed 10.00 mg/L rather than reading out of range
• Review sulfide, hardness and organic content of the sample against the interference list

Validation, handling and maintenance of HI97715

The meter supports CAL Check validation with the HI97715-11 kit and stores GLP data. Periodically wipe the cuvette with a lint-free cloth, check that the cap notch seats in the holder groove, and if an ambient-light warning appears, re-seat the cuvette before assuming a fault.

Keep cuvettes clean with the cleaning solution and a lint-free cloth, never touch the lower half of the glass, and store the meter in its carrying case. Replace the three AA cells when the battery icon appears; the meter keeps its logged readings and settings. For long storage between field trips remove the batteries and close the reagent bottles tightly.

Typical applications of HI97715 in Oman and the GCC

Typical Gulf users include sewage treatment works checking aeration performance, industrial effluent teams at petrochemical and refinery sites, and aquaculture or hatchery operators who watch ammonia in recirculating systems. Desalination and utility labs use the same meter for brine and cooling-water investigations.

Heat is a practical factor in the Gulf. Reaction times in the manual are given at 25 °C, so samples that sit in a vehicle at much higher temperature should be allowed to equilibrate, and the meter itself is rated for 0 to 50 °C. The sealed optics and IP67 floating case also cope with dust and spray on plant walkdowns.

Information to send with an RFQ for HI97715

• Quantity of meters and whether reagent sets (HI93715-01 or HI93715-03; CAL Check HI97715-11) and CAL Check cuvettes are also required
• Sample matrix and expected concentration, so we can confirm the range suits the application
• Delivery location in Oman or the GCC and required lead time
• Any need for spare cuvettes, carrying case or cleaning solution
• Project or tender reference, if applicable

Documents and quotation

The instruction manual for the HI97715 is attached on this page and covers specifications, the reagent procedure, CAL Check validation and error messages.

Send the part number HI97715, the quantity and your delivery location and we will reply with availability and a quotation.