{"product_id":"generic-pen-tds-pen-essential","title":"TDS Pen Water Tester","description":"\u003cdiv style=\"font-size:15px;line-height:1.65;color:#1b2b2d;\"\u003e\n\u003cp\u003eA TDS pen is an inexpensive handheld digital meter that measures total dissolved solids (in ppm) to gauge overall water quality and mineral content. It is essential for monitoring RO\/DI filter output, checking tap water, and tracking nutrient or remineralizer levels in planted and shrimp tanks. Pocket-sized with an LCD readout, most models read 0-9990 ppm with automatic temperature compensation; the representative unit shown is the HM Digital TDS pen.\u003c\/p\u003e\n\u003cdiv style=\"margin:26px 0 8px;border:1px solid #e3d6be;border-radius:14px;overflow:hidden;max-width:720px;\"\u003e\n\u003cdiv style=\"background:#1e535b;color:#fbf9f3;padding:13px 18px;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;line-height:1.5;margin:0;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background:#f7f4ec;\"\u003e\n\u003ctd style=\"padding:11px 18px;color:#566a6c;font-weight:600;width:40%;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eMeasures\u003c\/td\u003e\n\u003ctd style=\"padding:11px 18px;color:#123e45;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eTotal Dissolved Solids (ppm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:11px 18px;color:#566a6c;font-weight:600;width:40%;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eTDS Range\u003c\/td\u003e\n\u003ctd style=\"padding:11px 18px;color:#123e45;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003e0 - 9990 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7f4ec;\"\u003e\n\u003ctd style=\"padding:11px 18px;color:#566a6c;font-weight:600;width:40%;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eAccuracy\u003c\/td\u003e\n\u003ctd style=\"padding:11px 18px;color:#123e45;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003e+\/- 2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:11px 18px;color:#566a6c;font-weight:600;width:40%;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eResolution\u003c\/td\u003e\n\u003ctd style=\"padding:11px 18px;color:#123e45;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003e1 ppm (0-999); 10 ppm (1000-9990)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7f4ec;\"\u003e\n\u003ctd style=\"padding:11px 18px;color:#566a6c;font-weight:600;width:40%;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eTemperature Compensation\u003c\/td\u003e\n\u003ctd style=\"padding:11px 18px;color:#123e45;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eAutomatic (1-50 C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:11px 18px;color:#566a6c;font-weight:600;width:40%;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eFeatures\u003c\/td\u003e\n\u003ctd style=\"padding:11px 18px;color:#123e45;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003eHold function, auto-off after 10 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7f4ec;\"\u003e\n\u003ctd style=\"padding:11px 18px;color:#566a6c;font-weight:600;width:40%;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"padding:11px 18px;color:#123e45;border-bottom:1px solid #ece4d4;vertical-align:top;\"\u003e2 x 1.5V button cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Maren Marine","offers":[{"title":"Default Title","offer_id":47596027904178,"sku":"GENERIC_PEN_TDS_PEN_ESSENTIAL","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/5103\/3778\/files\/3-in-1-tds-temperature-ec-aquarium-digital-tester-lcd-pen.jpg?v=1781740667","url":"https:\/\/marenmarine.com\/products\/generic-pen-tds-pen-essential","provider":"Maren Marine","version":"1.0","type":"link"}