div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader042fdocumentsusreader042viewer20220307165b00e68f7f8b9af1148d573dhtml5page1jpg target=_blank img data-url=documentdissolved-oxygen-home-teton-science-schools-until-the-large-ring-on-the-plungerhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Dissolved Oxygen - Home - Teton Science Schools until the large ring on the plunger is opposite the zero O line on the scale Turn the bottle t and remove e ltrator NOTE: Depress loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentsusreader042viewer20220307165b00e68f7f8b9af1148d573dhtml5thumbnails1jpg width=140 height=200 adivpDissolved Oxygenpdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader042fdocumentsusreader042viewer20220307165b00e68f7f8b9af1148d573dhtml5page2jpg target=_blank img data-url=documentdissolved-oxygen-home-teton-science-schools-until-the-large-ring-on-the-plungerhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: Dissolved Oxygen - Home - Teton Science Schools until the large ring on the plunger is opposite the zero O line on the scale Turn the bottle t and remove e ltrator NOTE: Depress loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentsusreader042viewer20220307165b00e68f7f8b9af1148d573dhtml5thumbnails2jpg width=140 height=200 adivdiv