{"id":50154,"date":"2026-01-01T17:34:03","date_gmt":"2026-01-01T17:34:03","guid":{"rendered":"https:\/\/medqpharmaceuticalsupplies.co.za\/?post_type=product&#038;p=50154"},"modified":"2026-01-01T17:34:36","modified_gmt":"2026-01-01T17:34:36","slug":"portable-ph-orp-meter-ph-221","status":"publish","type":"product","link":"https:\/\/medqpharmaceuticalsupplies.co.za\/?product=portable-ph-orp-meter-ph-221","title":{"rendered":"Portable pH\/ORP Meter (PH-221)"},"content":{"rendered":"<div id=attachment_4993 style=width: 142px class=wp-caption alignnone><img decoding=async aria-describedby=caption-attachment-4993 title=portable ph\/orp meter (ph-221) class=size-full wp-image-4993 lazyloaded data-src=https:\/\/www.chemicalplus.co.za\/wp-content\/uploads\/2020\/11\/Portable-pHORP-PH-220-Meter-.jpg.webp alt=portable ph\/orp meter (ph-221) width=132 height=229 src=https:\/\/www.chemicalplus.co.za\/wp-content\/uploads\/2020\/11\/Portable-pHORP-PH-220-Meter-.jpg.webp style=--smush-placeholder-width: 132px; --smush-placeholder-aspect-ratio: 132\/229;><noscript><img decoding=async aria-describedby=caption-attachment-4993 title=portable ph\/orp meter (ph-221) class=size-full wp-image-4993 src=https:\/\/www.chemicalplus.co.za\/wp-content\/uploads\/2020\/11\/Portable-pHORP-PH-220-Meter-.jpg.webp alt=portable ph\/orp meter (ph-221) width=132 height=229 \/><\/noscript><\/p>\n<p id=caption-attachment-4993 class=wp-caption-text>Portable pH\/ORP Meter ( Model pH221)<\/p>\n<\/div>\n<p>\u00a0<\/p>\n<p>\u00a0<\/p>\n<p><strong>Application:<\/strong><\/p>\n<p>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<p><strong>\u00a0<\/strong><\/p>\n<p><strong>Features:<\/strong><\/p>\n<div>\n<p>* Stability indicator automatically shows current measurement status.<\/p>\n<p>* Auto-Hold function freezes stable reading for easy viewing and recording.<\/p>\n<p>* Automatic electrode diagnosis shows offset and electrode slope.<\/p>\n<p>* Reset feature automatically resumes parameters back to factory default options.<\/p>\n<p>\u00a0<\/p>\n<p><strong>pH Mode (For PH-221\/320):<\/strong><\/p>\n<p>* 1 to 5 points push-button calibration with auto-buffer recognition.<\/p>\n<p>* Automatic electrode slope display helps user decide whether to replace sensor.<\/p>\n<p>* Automatic Temperature Compensation provides accurate measured values.<\/p>\n<p>* Calibration Due Reminder prompts you to calibrate the meter regularly.<\/p>\n<p data-spm-anchor-id=a2700.details.pronpeci14.i0.436953ef80tLKj><strong>ORP Mode(For PH-221\/320):<\/strong><\/p>\n<p>* 1 point offset calibration allows adjusting the displayed value to a known standard.<\/p>\n<p>* Relative and absolute mV measurement modes provide accurate ORP readings.<\/p>\n<table border=1 cellspacing=0 cellpadding=0>\n<tbody>\n<tr>\n<td>\n<p data-spm-anchor-id=a2700.details.pronpeci14.i7.436953ef80tLKj>Model<\/p>\n<\/td>\n<td><\/td>\n<td>PH-221<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>pH Range<\/td>\n<td><\/td>\n<td>-2.000~20.000pH<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>pH Accuracy<\/td>\n<td><\/td>\n<td>\u00b10.002pH<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Resolution<\/td>\n<td><\/td>\n<td>0.1, 0.01, 0.001pH, Selectable<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Calibration Points<\/td>\n<td><\/td>\n<td>1~5 points<\/p>\n<p>\u00a0<\/p>\n<\/td>\n<td>\u00a0<\/p>\n<p>\u00a0<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>Calibration Solutions<\/td>\n<td><\/td>\n<td>USA (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<td><\/td>\n<\/tr>\n<tr>\n<td>Temperature Compensation<\/td>\n<td><\/td>\n<td>0~100\u00b0C, 32~212\u00b0F, Manual or Automatic<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>mV Range<\/td>\n<td><\/td>\n<td>-1999.9~1999.9mV<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>mV Accuracy<\/td>\n<td><\/td>\n<td>\u00b10.2mV<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Resolution<\/td>\n<td><\/td>\n<td>0.1, 1mV, Selectable<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Calibration Points<\/td>\n<td><\/td>\n<td>1 point (Only for Relative mV mode)<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Ion Concentration Range<\/td>\n<td><\/td>\n<td>\/<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Ion Concentration Accuracy<\/td>\n<td><\/td>\n<td>\/<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Calibration Points<\/td>\n<td><\/td>\n<td>\n<p data-spm-anchor-id=a2700.details.pronpeci14.i3.436953ef80tLKj>\/<\/p>\n<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Temperature Range<\/td>\n<td><\/td>\n<td>0~105\u00b0C, 32~221\u00b0F<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Temperature Accuracy<\/td>\n<td data-spm-anchor-id=a2700.details.pronpeci14.i8.436953ef80tLKj><\/td>\n<td>\u00b10.5\u00b0C,\u00b10.9\u00b0F<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Resolution<\/td>\n<td><\/td>\n<td>\/<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Hold Function<\/td>\n<td><\/td>\n<td>\/<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Memory<\/td>\n<td><\/td>\n<td>Stores up to 500 data sets<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Output<\/td>\n<td><\/td>\n<td>USB Communication Interface<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Connector<\/td>\n<td colspan=2>BNC<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Power Requirements<\/td>\n<td><\/td>\n<td>3\u00d71.5V \u201cAA\u201d batteries or DC5V power adapter<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Dimensions(W*D*H)<\/td>\n<td><\/td>\n<td colspan=2>170*85*30mm<\/td>\n<\/tr>\n<tr>\n<td>Package Size(W*D*H)<\/td>\n<td colspan=3>475*155*350mm<\/td>\n<\/tr>\n<tr>\n<td>Net Weight<\/td>\n<td colspan=3>300g<\/td>\n<\/tr>\n<tr>\n<td>Gross weight<\/td>\n<td colspan=3>2kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4993 lazyloaded\" data-src=\"https:\/\/www.masiyelabs.co.za\/wp-content\/uploads\/2020\/11\/Portable-pHORP-PH-220-Meter-.png\" alt=\"\" width=\"132\" height=\"229\" src=\"https:\/\/www.masiyelabs.co.za\/wp-content\/uploads\/2020\/11\/Portable-pHORP-PH-220-Meter-.png\" style=\"--smush-placeholder-width: 132px; --smush-placeholder-aspect-ratio: 132\/229;\"><noscript><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4993\" src=\"https:\/\/www.masiyelabs.co.za\/wp-content\/uploads\/2020\/11\/Portable-pHORP-PH-220-Meter-.png\" alt=\"\" width=\"132\" height=\"229\" \/><\/noscript><\/p>\n<p>Portable pH\/ORP Meter (PH-221)<\/p>\n","protected":false},"featured_media":50182,"template":"","meta":{"content-type":""},"product_brand":[],"product_cat":[11420],"product_tag":[11421],"class_list":{"0":"post-50154","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ph-meters-and-conductivity-meters-laboratory-equipment","7":"product_tag-laboratory-equipmentph-meters-and-conductivity-meters","9":"first","10":"instock","11":"sale","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/medqpharmaceuticalsupplies.co.za\/index.php?rest_route=\/wp\/v2\/product\/50154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/medqpharmaceuticalsupplies.co.za\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/medqpharmaceuticalsupplies.co.za\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/medqpharmaceuticalsupplies.co.za\/index.php?rest_route=\/wp\/v2\/media\/50182"}],"wp:attachment":[{"href":"https:\/\/medqpharmaceuticalsupplies.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=50154"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/medqpharmaceuticalsupplies.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=50154"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/medqpharmaceuticalsupplies.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=50154"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/medqpharmaceuticalsupplies.co.za\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=50154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}