diff --git a/assets/scss/default_theme/components/_transfer_menu.scss b/assets/scss/default_theme/components/_transfer_menu.scss
index b34c4f6..be7ae4f 100644
--- a/assets/scss/default_theme/components/_transfer_menu.scss
+++ b/assets/scss/default_theme/components/_transfer_menu.scss
@@ -58,4 +58,7 @@ input {
 	&[type="number"] {
 		width: 2em;
 	}
+	&.volume_input {
+		width: 4em;
+	}
 }
diff --git a/src/components/states.rs b/src/components/states.rs
index 26ee615..6d02efc 100644
--- a/src/components/states.rs
+++ b/src/components/states.rs
@@ -9,11 +9,13 @@ use crate::data::transfer::Transfer;
 
 #[derive(Debug, Default, Clone, PartialEq, Serialize, Deserialize, Store)]
 #[store(storage = "session")]
+#[non_exhaustive]
 pub struct CurrentTransfer {
     pub transfer: Transfer,
 }
 
 #[derive(Default, PartialEq, Clone, Serialize, Deserialize)]
+#[non_exhaustive]
 pub struct MainState {
     pub source_plates: Vec<PlateInstance>,
     pub destination_plates: Vec<PlateInstance>,
diff --git a/src/components/transfer_menu.rs b/src/components/transfer_menu.rs
index 54d3ddc..10aad29 100644
--- a/src/components/transfer_menu.rs
+++ b/src/components/transfer_menu.rs
@@ -134,6 +134,20 @@ pub fn TransferMenu() -> Html {
         })
     };
 
+    let on_volume_change = {
+        let ct_dispatch = ct_dispatch.clone();
+        
+        Callback::from(move |e: Event| {
+            let input = e.target().expect("Event must have target")
+                        .dyn_into::<HtmlInputElement>().ok().expect("Must have been emitted by input");
+            if let Ok(num) = input.value().parse::<f32>() {
+                ct_dispatch.reduce_mut(|state| {
+                    state.transfer.volume = num;
+                });
+            }
+        })
+    };
+
     let new_transfer_button_callback = {
         let main_dispatch = main_dispatch.clone();
         let main_state = main_state.clone();
@@ -267,6 +281,13 @@ pub fn TransferMenu() -> Html {
             onchange={on_dest_interleave_y_change}
             value={ct_state.transfer.transfer_region.interleave_dest.1.to_string()}/>
             </div>
+            <div>
+            <label for="volume"><h3>{"Volume"}</h3></label>
+            <input type="number" name="volume" class="volume_input"
+            min="0" step="0.1"
+            onchange={on_volume_change}
+            value={ct_state.transfer.volume.to_string()}/>
+            </div>
             <div id="controls">
             <input type="button" name="new_transfer" onclick={new_transfer_button_callback}
             value={"New"} />
diff --git a/src/data/csv.rs b/src/data/csv.rs
index 749ad05..6cedab9 100644
--- a/src/data/csv.rs
+++ b/src/data/csv.rs
@@ -16,9 +16,9 @@ struct TransferRecord {
     #[serde(rename = "Destination Well")]
     destination_well: String,
     #[serde(rename = "Volume")]
-    volume: f64,
+    volume: f32,
     #[serde(rename = "Concentration")]
-    concentration: Option<f64>,
+    concentration: Option<f32>,
 }
 
 pub fn state_to_csv(state: &MainState) -> Result<String, Box<dyn Error>> {
@@ -62,7 +62,7 @@ fn transfer_to_records(
                     source_well: format!("{}{}", num_to_letters(s_well.0).unwrap(), s_well.1),
                     destination_plate: dest_barcode.to_string(),
                     destination_well: format!("{}{}", num_to_letters(d_well.0).unwrap(), d_well.1),
-                    volume: 2.5, // Default value since not yet implemented
+                    volume: tr.volume,
                     concentration: None,
                 })
             }
diff --git a/src/data/transfer.rs b/src/data/transfer.rs
index f65b36d..d2dcb31 100644
--- a/src/data/transfer.rs
+++ b/src/data/transfer.rs
@@ -5,12 +5,19 @@ use serde::Serialize;
 use uuid::Uuid;
 
 #[derive(PartialEq, Clone, Default, Debug, Serialize, Deserialize)]
+#[non_exhaustive]
 pub struct Transfer {
     pub source_id: Uuid,
     pub dest_id: Uuid,
     pub name: String,
     id: Uuid,
     pub transfer_region: TransferRegion,
+    #[serde(default = "default_volume")]
+    pub volume: f32,
+}
+
+fn default_volume() -> f32 {
+    2.5f32
 }
 
 impl Transfer {
@@ -26,6 +33,7 @@ impl Transfer {
             name,
             id: Uuid::new_v4(),
             transfer_region: tr,
+            volume: 2.5,
         }
     }