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Hanna 473 ml 1500 ppm KCl standard reference solution
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Hanna Instruments 1500 ppm - 16 oz.

TDS Calibration Solution - 716855

Hanna Instruments' 16 oz 1500 ppm KCl standard reference solution is specifically formulated for use with electronic Hanna TDS meters but can be used with most TDS meters. When growing hydroponically, it is important to make sure your nutrient solution's ppm level is accurate for the health of the plants. Use Hanna's 1500 ppm KCl standard reference solution to calibrate your TDS meter and know that your nutrient solution ppm will be perfect for every crop you grow.

Brochures & Spec Sheets


Stock Code:  SUN-716855
Part No.:  716855
Case Quantity:  12
Brand:  Hanna Instruments
Volume:  473 ml

Testing Guide

For the best results, consult the ppm table below for various fruit, vegetable, herb and tropical plant nutrient solution ppm levels. Keeping your nutrient solution at the right concentration is important for maintaining optimum growth!  (TDS level ranges below are listed in ppm.)

Species TDS Range   Species TDS Range
African Violets 840-1050   Ficus 1120-1680
Artichoke 560-1260        Garlic 980-1260
Asparagus 980-1260   Gladiolus 1400-1680
Aster 1260-1680   Impatiens 1260-1400
Bananas 1260-1540   Lavender 700-980
Basil 700-1120   Leek 980-1260
Beans 1400-2800   Lettuce 560-840
Blueberries 1260-1400   Mint 1400-1680
Broccoli 1960-2450   Okra 1400-1680
Cabbage 1750-2100   Palms 1120-1400
Carnation 1260-2450   Parsley 560-1260
Carrots 1120-1400   Peas 980-1260
Cauliflower 1050-1400   Rosemary 700-1120
Celery 1260-1680   Sage 700-1120
Chives 1260-1540   Spinach 1260-1610
Cucumber 1190-1750   Strawberries 1260-1540
Eggplant 1750-2450   Thyme 560-1120
Endive 1400-1680   Tomatoes 1400-3500
Ferns 1120-1400   Zucchini 1260-1680

Return Policy

Grow Lighting & Hydroponics Return Policy

Grow Lights, Hydroponic supplies, special orders, and non-stock items are sold as "ALL SALES FINAL, no returns accepted". All fixtures are considered Special Order and are non-returnable. Please allow an account manager to assist you in this kind of purchase in order to guarantee that you are receiving the correct product.

Some grow lights and accessories have their respective factory warranties stated on our website. will assist its customers with these factory warranties in the following manner:

If a product is declared defective and is under warranty; the customer is asked to contact customer service or their account manager and ask for a return merchandise authorization. (RMA) With the RMA, our customer may return the declared defective product at the customer's expense, for factory testing. When the factory tells that the product is defective and not a product that has been improperly installed, we can credit our customer for the product and we will also credit the original shipping costs of that original purchase. If a replacement is needed, it must be ordered and paid for as if it were a new order. (A credit for the defective may take from 2-4 weeks to be declared acceptable under warranty.) Any and all remedies concerning Hydroponics Supply purchases will follow guidelines as set forth here. Other products are not returnable under circumstances outside those described above.

All of the products sold by are first quality products. All are factory tested and ready for customer application.

WARNING: Non- Plug in Ballast wiring and installation procedures are very complicated and should be attempted by a licensed electrician only. Ballast installation poses serious risks of electric shock which can lead to injury or death.

Shipping or Website Errors

Should the customer receive product not expressly ordered either by our shipping error or incorrect website information, the product will be picked up by our shipper and replacements shipped at no additional charge.

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