it says expiration date 5/2021 , are they still usable?

Probably, they are dry reagents. I would suggest ordering a new batch, comparing tests, and then decide.

So just to confirm hi774 is the same as hi736?

Hello hi774 is NOT the same as hi736. HI774-25 is designed to be used with samples that have an expected range of 0.00 to 0.90 ppm phosphate. HI736-25 is designed to be used with samples that have an expected range of 0 to 200 ppb phosphorus.

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HANNA HI 774-25 Phosphate Ultra Low Range Checker Reagents (25 Tests)

HANNA HI 774-25 Phosphate Ultra Low Range Checker Reagents (25 Tests)

Product ID: 741232715

Details

Brand
Hanna
Global Trade Identification Number
Manufacturer
Hanna

🌊Ultra low phosphate range 0.00-0.90 ppm

📅Expiration & lot traceability

🧪25 precision pre-measured tests

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Description

🧬 Unlock pristine water clarity with precision you can trust!

TRUSTED BRAND - Hanna Instruments’ USA-made reagents backed by 4.8-star reviews and industry expertise.
TRACEABLE QUALITY - Each packet marked with expiration date and lot number ensures consistent, trustworthy results.
EFFORTLESS ACCURACY - Pre-measured reagents eliminate guesswork for fast, reliable phosphate readings.
ULTRA LOW SENSITIVITY - Detect phosphate levels as low as 0.00 ppm, perfect for pristine aquariums and sensitive environments.
VERSATILE APPLICATION - Ideal for aquariums, aquaculture, environmental monitoring, and water quality testing.

The HANNA HI 774-25 reagent packets provide 25 pre-measured tests designed for ultra-low phosphate detection (0.00 to 0.90 ppm) using the Ascorbic Acid Method. Made in the USA with high purity chemicals, each reagent is marked for expiration and lot traceability, ensuring reliable and fast phosphate measurements ideal for aquariums, aquaculture, and environmental water quality monitoring.

Specifications

ASIN	B07SN7NSHP
Best Sellers Rank	#7,271 in Pet Supplies ( See Top 100 in Pet Supplies ) #268 in Aquarium Accessories
Brand Name	Hanna Instruments
Country of Origin	USA
Customer Reviews	4.8 4.8 out of 5 stars (422)
Global Trade Identification Number	00860012631049
Manufacturer	Hanna Instruments
Model Number	HI774-25
Part Number	HI774-25

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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8619 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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