{"id":213,"date":"2018-07-20T11:25:37","date_gmt":"2018-07-20T02:25:37","guid":{"rendered":"https:\/\/nichiri-mfg.jp\/?page_id=213"},"modified":"2026-01-19T14:41:41","modified_gmt":"2026-01-19T05:41:41","slug":"refractive-index-detector","status":"publish","type":"page","link":"https:\/\/nichiri-mfg.jp\/en\/product\/liquid-chromatography\/refractive-index-detector","title":{"rendered":"Refractive Index Detector"},"content":{"rendered":"<h3>Refractive Index Detector<\/h3>\n<p>In refractive index detector, the light beam undergoes a deflection in proportion to a difference in refractive index between sample side liquid and reference side liquid as it passes through the flow cell.<\/p>\n<p>The deflection of the light beam is taken as a displacement on the light-receiving element (photo sensor) and is displayed as a difference of the refractive index.<\/p>\n<p>Most of refractive index detector out in the market employ reference stop valve so called that suspends reference side liquid delivery to the cell during a measurement. A state of reference side liquid trapped in the cell should change over time and may affect a precision of measurement.<\/p>\n<p><!--\nTo be faithful to the theory, RI8800 maintains dual flow (sample side and reference side) in parallel always.\n\n<a href=\"https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1-1024x813.png\" data-lightbox=\"roadtrip1\" data-title=\"RI8800 Refractive Index Detector\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1-1024x813.png\" alt=\"RI8800 \u793a\u5dee\u5c48\u6298\u7387\u691c\u51fa\u5668\" width=\"1024\" height=\"813\" class=\"aligncenter size-large wp-image-720 lazyload\" srcset=\"https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1-1024x813.png 1024w, https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1-600x476.png 600w, https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1-300x238.png 300w, https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1-768x610.png 768w, https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1-270x214.png 270w, https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1-282x224.png 282w, https:\/\/nichiri-mfg.jp\/wp\/wp-content\/uploads\/2018\/08\/RI8800-1.png 1568w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\n\n\n\n<h3>Specifications<\/h3>\n\n\n\n\n<table class=\"resTable\">\n\n\n<tbody>\n\n\n<tr>\n\n\n<th class=\"\" width=\"25%\">Measuring Method<\/th>\n\n\n\n\n<td class=\"\">Brice, Deflection Type<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\" width=\"25%\">Flow Path<\/th>\n\n\n\n\n<td class=\"\">Dual Flow<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Refractive Index Range<\/th>\n\n\n\n\n<td class=\"\">1.00\uff5e1.8<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Measuring Range<\/th>\n\n\n\n\n<td class=\"\">0.25, 0.50, 1.00, 2.00, 4.00, 8.00, 16.00, 32.00, 64.00, 128.00,\n256.00, 512.00, S(\u00d710<sup>-6<\/sup> RIU\/FS) <sup>*1<\/sup><\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Flow Cell<\/th>\n\n\n\n\n<td class=\"\">Internal Volume : 2.5 \u03bcL (option; 8 or 10 \u03bcL)\nPressure Rating : 5 kgf\/cm, 0.5MPa<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Noise<\/th>\n\n\n\n\n<td class=\"\">2.5\u00d710<sup>-9<\/sup> RIU(THF, Response: 3.00 sec) <sup>*2<\/sup><\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Drift<\/th>\n\n\n\n\n<td class=\"\">8\u00d710<sup>-7<\/sup> RIU\/h\n(THF, Flow Rate 1.0 mL\/min, Ambient temperature change within +\/-1\u2103)<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Response<\/th>\n\n\n\n\n<td class=\"\">0.05, 1.00, 3.00 sec<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Temperature Control<\/th>\n\n\n\n\n<td class=\"\">30, 35, 40, 45, OFF<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Auto Zero<\/th>\n\n\n\n\n<td class=\"\">Measuring Range<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Signal Input<\/th>\n\n\n\n\n<td class=\"\">Marker: TTL level or Contact Closure <sup>*3<\/sup>\nAuto Zero: TTL level or Contact Closure<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Signal Output<\/th>\n\n\n\n\n<td class=\"\">Recorder: 10 mV\/FS\nIntegrator: 1V\/256\u00d710<sup>-6<\/sup> RIU\u30011V\/64\u00d710<sup>-6<\/sup> RIU\nMarker: Recorder+1mV or Contact Closure\nLeak: Contact Closure<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Dimensions<\/th>\n\n\n\n\n<td class=\"\">240(W)\u00d7150(H)\u00d7440(D) mm<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Weight<\/th>\n\n\n\n\n<td class=\"\">12 kg<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Power<\/th>\n\n\n\n\n<td class=\"\">AC100V +\/-10%, 50\/60 Hz, 100 VA<\/td>\n\n\n<\/tr>\n\n\n\n\n<tr>\n\n\n<th class=\"\">Tubing (Accessory)<\/th>\n\n\n\n\n<td class=\"\">Inlet: 316SST, 0.2 mm (ID) \u00d7 800mm (L)\nOutlet: 316SST, 0.6 mm (ID) \u00d7 800mm (L)<\/td>\n\n\n<\/tr>\n\n\n<\/tbody>\n\n\n<\/table>\n\n\n*1 Refractive Index Unit\n*2 Tetrahydrofuran (THF)\n*3 Transistor-Transistor Logic\n--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Refractive Index Detector In refractive index detector, the light beam undergoes a deflection in proportion to a difference in refractive index between sample side liquid and reference side liquid as it passes through the flow cell. The deflection of the light beam is taken as a displacement on the light-receiving element (photo sensor) and is displayed as a difference of the refractive index. Most of refractive index detector out in the market employ reference stop valve so called that suspends reference side liquid delivery to the cell during a measurement. A state of reference side liquid trapped in the cell should change over time and may affect a precision of [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":52,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"page-templates\/page-none.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-213","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/pages\/213","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/comments?post=213"}],"version-history":[{"count":13,"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/pages\/213\/revisions"}],"predecessor-version":[{"id":2657,"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/pages\/213\/revisions\/2657"}],"up":[{"embeddable":true,"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/pages\/52"}],"wp:attachment":[{"href":"https:\/\/nichiri-mfg.jp\/en\/wp-json\/wp\/v2\/media?parent=213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}