| Absorption coefficients and fluorescence measurements from CTD bottle samples collected during the R/V Kilo Moana cruise KM1427 in the North Pacific Ocean in December of 2014 | Thermo-Scientific micro pH electrode coupled to an Orion 4 Star pH ISE benchtop meter
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| Alkalinity and dissolved inorganic carbon (DIC) from sea water samples collected at coral reefs from equatorial central Pacific in 1973, 2012, 2015, and 2018 | For data collected in 1973, a Corning model 101 pH meter and a combination electrode were used for all pH and alkalinity measurements.
| Corning model 101 pH meter and combination electrode |
| Barataria Bay carbon mineralization and biogeochemical properties from nine soil cores | Soil pH was determined by creating a 1:5 slurry of soil to distilled, deionized water, and sub- sequent measurement using an Accument bench top pH probe (Accumet XL200, ThermoFisher Scientific, Waltham, MA, USA).
| Accument bench top pH probe |
| Table 1: Experimental conditions and fluid carbonate chemistry for RPI-3 run where only aragonite precipitated | Used to measure pH.
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| Experimental results of effects of acidification on corals and calcified algae collected from the Richard B Gump Research Station during 2011, in French Polynesia (MCR LTER project, OA_Corals project) | An Orion, 3-star mobile pH meter was used to measure pH in each incubation tank.
| Benchtop pH Meter |
| Results from experiment examining effects of 4 different dyes on growth rates of scleractinian corals; from the Cohen lab at WHOI in Woods Hole, MA (OA Nutrition and Coral Calcification project) | A Thermo-Orion ROSS 8165BNWP electrode, read to 0.1 mV, was used to measure the pH of each experimental container.
| pH Probe |
| Results of laboratory study examining effects of elevated concentrations of seawater carbon dioxide and altered salinity on rates of oxygen utilization by larval porcelain crabs (Petrolisthes cinctipes) | pH (total scale) was measured using a glass electrode (Accumet Excel XL60; Thermo Fisher Scientific, Waltham, Massachusetts, USA)
| Accumet Excel XL60 |
| Results of laboratory study examining effects of elevated concentrations of seawater carbon dioxide and altered salinity on rates of oxygen utilization by larval porcelain crabs (Petrolisthes cinctipes) | pH (total scale) was measured using a glass electrode (Accumet Excel XL60; Thermo Fisher Scientific, Waltham, Massachusetts, USA)
| Accumet Excel XL60 |
| Results of laboratory study examining effects of elevated concentrations of seawater carbon dioxide and altered salinity on rates of oxygen utilization by larval porcelain crabs (Petrolisthes cinctipes) | pH (total scale) was measured using a glass electrode (Accumet Excel XL60; Thermo Fisher Scientific, Waltham, Massachusetts, USA)
| Accumet Excel XL60 |
| Results of laboratory study examining effects of elevated concentrations of seawater carbon dioxide and altered salinity on rates of oxygen utilization by larval porcelain crabs (Petrolisthes cinctipes) | pH (total scale) was measured using a glass electrode (Accumet Excel XL60; Thermo Fisher Scientific, Waltham, Massachusetts, USA)
| Accumet Excel XL60 |
| Results of laboratory experiment examining growth, CO2- and N2-fixation of Crocosphaera watsonii in differing pCO2 and light levels; conducted in the Hutchins Laboratory, USC | Culture pH was measured using an Orion 5 Star (Thermo Scientific).
| Benchtop pH Meter |
| Results of laboratory experiment examining growth and N2-fixation of Crocosphaera watsonii under differing pCO2 levels; conducted in the Hutchins Laboratory, USC | Culture pH was measured using an Orion 5 Star (Thermo Scientific).
| Benchtop pH Meter |
| Results of laboratory experiments examining Cyanobacteria (Trichodesmium and Crocosphaera watsonii) N2-fixation responses to pCO2; conducted in the Hutchins Laboratory, USC | pH was monitored daily using a microprocessor pH meter (NBS system).
| Benchtop pH Meter |
| pH measurements from larval rearing jars used in an experiment on behavioral effects of ocean acidification on sand dollar larvae (Dendraster excentricus), July 2017 | The pH electrode was prepared before each set of measurements following instructions in the ROSS Electrode User Guide (Thermo Fisher Scientific Inc.) and calibrated with a three-buffer calibration using Thermo Scientific Orion pH Buffer Individual Use Pouches
| Thermo Scientific Orion Star A214 pH/ISE meter with a Micro PerpHect Ross® Combination pH electrode |
| Average calculated pCO2 of gas in equilibrium with seawater, pH, carbonate ion concentration, bicarbonate ion concentration, dissolved CO2, aragonite saturation state, measured salinity, temperature, pH, total alkalinity, and dissolved inorganic carbon. | Thermo Scientific Orion 2 Star benchtop pH meter with an Orion 9156BNWP pH probe
| Thermo Scientific Orion 2 Star benchtop pH meter |
| Chemical analysis from sediment core pore water samples collected in the back barrier island bays on Virginia’s Eastern Shore in July 2017 | Used to measure pH
| Cole-Parmer pH electrode |
| Average measured temperature, salinity, TA, DIC, dO18, and d13C; Average calculated pCO2, pH, carbonate ion concentration, bicarbonate ion concentration, dissolved CO2, and aragonite saturation state. | Thermo Scientific Orion 2 Star benchtop pH meter and an Orion 9156BNWP probe
| Thermo Scientific Orion 2 Star benchtop pH meter |
| The density (mg CaCO3/cm^3) of the skeleton of Clathromorphum nereostratum, when assessed as function of increasing seawater temperature and pCO2 concentration | To measure pH of tanks
| Accumet AB15 pH meter with Accufet solid state probe |
| Experimental study to estimate per capita sea urchin (Strongylocentrotus polyacanthus) grazing rates on the alga Clathromorphum nereostratum as a function of seawater temperature and pCO2 concentration | To measure pH of tanks
| Accumet AB15 pH meter with Accufet solid state probe |
| Water chemistry during mesocosm study of trophic interactions under ocean acidification in Bodega Bay, CA. | | Sunburst SAMI spectrophotometric unit |
| Carbonate chemistry analyses of water collected from near Walpole, ME from zooplankton hatching experiments during 2011 | The pH of the samples were determined using a Ross Ultra semimicroelectrode (Orion #8103BNUWP) connected to an op-amp circuit (unity-gain follower) whose output voltage matches the electrode output. This op-amp output was continuously monitored via a 14 bit A-to-D converter and computer.
| Benchtop pH Meter |
| Calcification and linear extension rates for Oculina arbuscula corals grown under different pCO2 levels; from the Cohen lab at WHOI in Woods Hole, MA (OA Nutrition and Coral Calcification project) | Seawater pH was determined weekly using an Orion pH electrode/meter (precision = +/- 0.005; accuracy = +/- 0.02).
| pH Meter |
| pH measurements from laboratory water column experiments on the behavioral effects of ocean acidification on Olympia oyster larvae (Ostrea lurida), July 2017 | The pH electrode was prepared before each set of measurements following instructions in the ROSS® Electrode User Guide (Thermo Fisher Scientific Inc.) and calibrated with a three-buffer calibration using Thermo ScientificTM OrionTM pH Buffer Individual Use Pouches.
| Thermo Scientific Orion Star A214 pH/ISE meter with a Micro PerpHect Ross® Combination pH electrode |
| Calcium carbonate dissolution experiment Phase 1: Effect of elevated pCO2 on sediment dissolution. | | Orion ROSS pH/ATC Triode |
| Calcium carbonate dissolution experiment Phase 2: Effect of elevated pCO2 and NO3- on sediment dissolution. | | Orion ROSS pH/ATC Triode |
| Results from experiments on Pseudo-nitzschia fraudulenta growth and domic acid productionunder varying CO2 and silicate levels (PhytoTM_in_HighCO2 project) | pH of the carbonate buffer system was determined on freshly collected samples using a calibrated Orion 5-star plus pH meter.
| Benchtop pH Meter |
| Discrete bottle sample measurements for carbonate chemistry from samples collected in the Sage Lot Pond salt marsh tidal creek in Waquoit Bay, MA from 2012 to 2015 | | ORION 3 Star pH meter |
| Series 4A: Multiple stressor experiments on Synechococcus elongatus (CCMP1629) – pH measurements | Used for daily pH measurements.
| Aquatrode plus Pt1000; Metrohm, Switzerland |
| Continuous culture studies of Synechococcus elongatus CCMP1629 in nitrate-limited and nutrient-replete cultures plus DNA results | | Hach SensION model PH31 pH meter |
| Table 1: Physical and chemical parameters during Calanus finmarchicus and Meganyctiphanes norvegica egg hatching experiments, 2011-2012 | Used with a gel-filled model number 9107WMMD pH/ATC Triode
| Orion Four Star pH conductivity meter |
| Table 2: Carbonate data and nutrients measured during Calanus finmarchicus and Meganyctiphanes norvegica egg hatching success experiments, 2011-2012 | Adapted so that the millivolt out was logged by computer through a 14 bit A to D converter. The electrode was an Orion Ross ultra semi-micro glass electrode model 8103-BNUWP.
| Corning model 109 |
| Table 3: Calanus finmarchicus and Meganyctiphanes norvegica egg hatching success, 2011-2012 | Adapted so that the millivolt out was logged by computer through a 14 bit A to D converter. The electrode was an Orion Ross ultra semi-micro glass electrode model 8103-BNUWP.
| Corning model 109 |
| Continuous culture studies of possible climate change effects: Thalassiosira pseudonana CCMP1335 growth in nitrate-limited and nutrient-replete cultures | | Hach SensION model PH31 pH meter |
| Experimental results of nitrate-limited or nitrate-replete continuous culture studies of Thalassiosira pseudonana at 5 temperatures with either high or low pCO2 and irradiance | | Hach SensION model PH31 pH meter |
| Experimental results from a study of cellular quotas of carbon, nitrogen, and phosphorus in Trichodesmium erythraeum strain IMS101 under varying pCO2 and light conditions (PhytoTM_in_HighCO2 project) | pH was measured with an Orion 5 star Thermo Scientific (Beverly, MA, USA) pH meter.
| Benchtop pH Meter |
| Experimental results from a study of CO2 and N2 fixation and trichome length of Trichodesmium erythraeum under varying pCO2 and light conditions (PhytoTM_in_HighCO2 project) | pH was measured with an Orion 5 star Thermo Scientific (Beverly, MA, USA) pH meter.
| Benchtop pH Meter |
| Experimental results from a study of growth rates of two strains of Trichodesmium erythraeum under varying pCO2 and light conditions (PhytoTM_in_HighCO2 project) | pH was measured with an Orion 5 star Thermo Scientific (Beverly, MA, USA) pH meter.
| Benchtop pH Meter |
| Results from Calanus pacificus Acidification Laboratory Experiments from 2019-2020 (Zooplankton Swimming project) | Treatment pH conditions were measured as a part of experiment set-up by a Star A221 pH meter with a Ross ultra gel pH/ATC electrode that was calibrated daily prior to use.
| Star A221 pH meter with a Ross ultra gel pH/ATC electrode |
| [Deprecated] Laboratory growth, photosynthetic, and respiration rates of Thalassiosira pseudonana clone 3H in nitrate limited culture (Stressors on Marine Phytoplankton project) | | Hach SensION model PH31 pH meter |
| [Deprecated] Laboratory growth, photosynthetic, and growth rates of Thalassiosira pseudonana clone 3H in nitrate replete culture (Stressors on Marine Phytoplankton project) | | Hach SensION model PH31 pH meter |
©2020 Biological and Chemical Oceanography Data Management Office.