{"id":70286,"date":"2026-05-02T06:09:56","date_gmt":"2026-05-02T04:09:56","guid":{"rendered":"https:\/\/chestxray.co.za\/?post_type=product&p=70286"},"modified":"2026-05-02T06:10:02","modified_gmt":"2026-05-02T04:10:02","slug":"portable-ph-orp-meter-ph-221","status":"publish","type":"product","link":"https:\/\/chestxray.co.za\/?product=portable-ph-orp-meter-ph-221","title":{"rendered":"Portable pH\/ORP Meter PH-221"},"content":{"rendered":"

Portable pH\/ORP Meter PH-221<\/p>\n

Application:<\/strong><\/p>\n

Economy portable pH meter, 2 points calibration, automatic temperature compensation, system menu contains 2 optional parameters. The meter is used for measuring the pH and millivolt of samples. Accuracy: 0.01pH.<\/p>\n

Features:<\/strong><\/p>\n

* Stability indicator automatically shows current measurement status.<\/p>\n

* Auto-Hold function freezes stable reading for easy viewing and recording.<\/p>\n

* Automatic electrode diagnosis shows offset and electrode slope.<\/p>\n

* Reset feature automatically resumes parameters back to factory default options.<\/p>\n

pH Mode (For PH-221\/320):<\/strong><\/p>\n

* 1 to 5 points push-button calibration with auto-buffer recognition.<\/p>\n

* Automatic electrode slope display helps user decide whether to replace sensor.<\/p>\n

* Automatic Temperature Compensation provides accurate measured values.<\/p>\n

* Calibration Due Reminder prompts you to calibrate the meter regularly.<\/p>\n

ORP Mode(For PH-221\/320):<\/strong><\/p>\n

* 1 point offset calibration allows adjusting the displayed value to a known standard.<\/p>\n

* Relative and absolute mV measurement modes provide accurate ORP readings.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Model<\/p>\n<\/td>\n

PH-221<\/td>\n<\/tr>\n
pH Range<\/td>\n-2.000~20.000pH<\/td>\n<\/tr>\n
pH Accuracy<\/td>\n\ufffd\ufffd0.002pH<\/td>\n<\/tr>\n
Resolution<\/td>\n0.1, 0.01, 0.001pH, Selectable<\/td>\n<\/tr>\n
Calibration Points<\/td>\n1~5 points <\/td>\n<\/tr>\n
Calibration Solutions<\/td>\nUSA (pH1.68\/4.01\/7.00\/10.01\/12.45), NIST (pH1.68\/4.01\/6.86\/9.18\/12.45), DIN (pH1.09\/4.65\/6.79\/9.23\/12.75) or User-defined<\/td>\n<\/tr>\n
Temperature Compensation<\/td>\n0~100\ufffd\ufffdC, 32~212\ufffd\ufffdF, Manual or Automatic<\/td>\n<\/tr>\n
mV Range<\/td>\n-1999.9~1999.9mV<\/td>\n<\/tr>\n
mV Accuracy<\/td>\n\ufffd\ufffd0.2mV<\/td>\n<\/tr>\n
Resolution<\/td>\n0.1, 1mV, Selectable<\/td>\n<\/tr>\n
Calibration Points<\/td>\n1 point (Only for Relative mV mode)<\/td>\n<\/tr>\n
Ion Concentration Range<\/td>\n\/<\/td>\n<\/tr>\n
Ion Concentration Accuracy<\/td>\n\/<\/td>\n<\/tr>\n
Calibration Points<\/td>\n\n

\/<\/p>\n<\/td>\n<\/tr>\n

Temperature Range<\/td>\n0~105\ufffd\ufffdC, 32~221\ufffd\ufffdF<\/td>\n<\/tr>\n
Temperature Accuracy<\/td>\n\ufffd\ufffd0.5\ufffd\ufffdC,\ufffd\ufffd0.9\ufffd\ufffdF<\/td>\n<\/tr>\n
Resolution<\/td>\n\/<\/td>\n<\/tr>\n
Hold Function<\/td>\n\/<\/td>\n<\/tr>\n
Memory<\/td>\nStores up to 500 data sets<\/td>\n<\/tr>\n
Output<\/td>\nUSB Communication Interface<\/td>\n<\/tr>\n
Connector<\/td>\nBNC<\/td>\n<\/tr>\n
Power Requirements<\/td>\n3\ufffd\ufffd1.5V \ufffd\ufffd\ufffdAA\ufffd\ufffd\ufffd batteries or DC5V power adapter<\/td>\n<\/tr>\n
Dimensions(W*D*H)<\/td>\n170*85*30mm<\/td>\n<\/tr>\n
Package Size(W*D*H)<\/td>\n475*155*350mm<\/td>\n<\/tr>\n
Net Weight<\/td>\n300g<\/td>\n<\/tr>\n
Gross weight<\/td>\n2kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n
  • Portable pH\/ORP Meter PH-221<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

    Portable pH\/ORP Meter (PH-221)<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"content-type":""},"product_brand":[],"product_cat":[8787],"product_tag":[21770],"class_list":{"0":"post-70286","1":"product","2":"type-product","3":"status-publish","5":"product_cat-ph-meters","6":"product_tag-portable-ph-orp-meter-ph-221","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/product\/70286","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=70286"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=70286"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=70286"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/chestxray.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=70286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}