Hanna customer service doesn't exist. I ignored all attempts to contact her. I've gone through two of these pens. Both gave intermittent readings and knocked me out shortly after changing the pH sensors. I switched to the Blue Labs ph and ppm knobs. They are leaps and bounds ahead of Hanna in terms of ease of use and customer service.
YEAHBEER 3.2FT Felt Christmas Tree For Kids Wall With 30 Detachable DIY Ornaments - Xmas Gift And Door Hanging Decoration For New Year Celebrations
38 Review
Nitro-Style Draft Beer Dispenser - FIZZICS DraftPour, Perfect Gift For Homebrewers & Craft Beer Enthusiasts!
37 Review
24-Inch Musical Christmas Tree With Charlie Brown & Linus Blanket - ProductWorks
37 Review
OMyTea® Women Hand Held Silk Folding Fan Bamboo Frame Fabric Sleeve Protection Gifts Sakura Cherry Blossom Pattern WZS-2
24 Review
300PCS Pre-Cut Unbleached Parchment Paper Sheets - Perfect For Baking, Grilling, Air Fryer & Steaming!
36 Review
PME Scriber Needle Modelling Tool, For Cake Decorating, 5.7-Inch
38 Review
GOBAM Wood Rolling Pin: The Perfect Dough Roller For Baking Cookies, Pie, Pizza & More - 13 X 1.38 Inches
35 Review
4 Pack 12 Inch Stainless Steel Round Pizza Baking Pan Tray Crisper Sheet Oven Cooking Healthy For Pizzas - Deedro
47 Review