diff --git a/src/main/java/refinedstorage/container/ContainerBase.java b/src/main/java/refinedstorage/container/ContainerBase.java
index 19b8349d9..2082a1c5b 100644
--- a/src/main/java/refinedstorage/container/ContainerBase.java
+++ b/src/main/java/refinedstorage/container/ContainerBase.java
@@ -7,6 +7,7 @@ import net.minecraft.inventory.ClickType;
 import net.minecraft.inventory.Container;
 import net.minecraft.inventory.Slot;
 import net.minecraft.item.ItemStack;
+import org.lwjgl.input.Keyboard;
 import refinedstorage.container.slot.SlotDisabled;
 import refinedstorage.container.slot.SlotSpecimen;
 
@@ -63,7 +64,56 @@ public abstract class ContainerBase extends Container
 
 		if (slot instanceof SlotSpecimen)
 		{
-			if (clickedButton == 2 || player.inventory.getItemStack() == null)
+			if (((SlotSpecimen) slot).isSizeAllowed())
+			{
+				if (player.inventory.getItemStack() != null)
+				{
+					int amount = player.inventory.getItemStack().stackSize;
+
+					if (clickedButton == 1)
+					{
+						amount = 1;
+					}
+
+					ItemStack toPut = player.inventory.getItemStack().copy();
+					toPut.stackSize = amount;
+
+					slot.putStack(toPut);
+				}
+				else if (slot.getStack() != null)
+				{
+					if (Keyboard.isKeyDown(Keyboard.KEY_LSHIFT))
+					{
+						slot.putStack(null);
+					}
+					else
+					{
+						int amount = slot.getStack().stackSize;
+
+						if (clickedButton == 0)
+						{
+							amount++;
+
+							if (amount > 64)
+							{
+								amount = 64;
+							}
+						}
+						else if (clickedButton == 1)
+						{
+							amount--;
+
+							if (amount < 1)
+							{
+								amount = 1;
+							}
+						}
+
+						slot.getStack().stackSize = amount;
+					}
+				}
+			}
+			else if (player.inventory.getItemStack() == null)
 			{
 				slot.putStack(null);
 			}
diff --git a/src/main/java/refinedstorage/container/slot/SlotSpecimen.java b/src/main/java/refinedstorage/container/slot/SlotSpecimen.java
index 33386673e..87ab2a6c6 100644
--- a/src/main/java/refinedstorage/container/slot/SlotSpecimen.java
+++ b/src/main/java/refinedstorage/container/slot/SlotSpecimen.java
@@ -7,13 +7,13 @@ import net.minecraft.item.ItemStack;
 
 public class SlotSpecimen extends Slot
 {
-	private boolean allowSize;
+	private boolean sizeAllowed;
 
 	public SlotSpecimen(IInventory inventory, int id, int x, int y, boolean allowSize)
 	{
 		super(inventory, id, x, y);
 
-		this.allowSize = allowSize;
+		this.sizeAllowed = allowSize;
 	}
 
 	@Override
@@ -31,11 +31,16 @@ public class SlotSpecimen extends Slot
 	@Override
 	public void putStack(ItemStack stack)
 	{
-		if (stack != null && !allowSize)
+		if (stack != null && !sizeAllowed)
 		{
 			stack.stackSize = 1;
 		}
 
 		super.putStack(stack);
 	}
+
+	public boolean isSizeAllowed()
+	{
+		return sizeAllowed;
+	}
 }
diff --git a/src/main/java/refinedstorage/gui/GuiInterface.java b/src/main/java/refinedstorage/gui/GuiInterface.java
index bee66ff85..d7deb39a1 100644
--- a/src/main/java/refinedstorage/gui/GuiInterface.java
+++ b/src/main/java/refinedstorage/gui/GuiInterface.java
@@ -45,5 +45,14 @@ public class GuiInterface extends GuiBase
 		drawString(7, 7, t("gui.refinedstorage:interface.import"));
 		drawString(7, 42, t("gui.refinedstorage:interface.export"));
 		drawString(7, 123, t("container.inventory"));
+
+		if (inBounds(162, 42, 7, 7, mouseX, mouseY))
+		{
+			String message = t("gui.refinedstorage:interface.export.explanation.0");
+			message += "\n" + t("gui.refinedstorage:interface.export.explanation.1");
+			message += "\n" + t("gui.refinedstorage:interface.export.explanation.2");
+
+			drawTooltip(mouseX, mouseY, message);
+		}
 	}
 }
diff --git a/src/main/resources/assets/refinedstorage/lang/en_US.lang b/src/main/resources/assets/refinedstorage/lang/en_US.lang
index 65f2b9549..ff03552dd 100644
--- a/src/main/resources/assets/refinedstorage/lang/en_US.lang
+++ b/src/main/resources/assets/refinedstorage/lang/en_US.lang
@@ -15,6 +15,9 @@ gui.refinedstorage:constructor=Constructor
 gui.refinedstorage:relay=Relay
 gui.refinedstorage:interface.import=Interface Import
 gui.refinedstorage:interface.export=Interface Export
+gui.refinedstorage:interface.export.explanation.0=Top slots: items you want exported
+gui.refinedstorage:interface.export.explanation.1=Clear a slot: mouse click + SHIFT
+gui.refinedstorage:interface.export.explanation.2=Incr. or decr. a slot: left/ right mouse click
 
 misc.refinedstorage:energy_stored=%d / %d RF
 misc.refinedstorage:energy_usage=Usage: %d RF/t
diff --git a/src/main/resources/assets/refinedstorage/lang/nl_NL.lang b/src/main/resources/assets/refinedstorage/lang/nl_NL.lang
index 3f88f0603..758235863 100644
--- a/src/main/resources/assets/refinedstorage/lang/nl_NL.lang
+++ b/src/main/resources/assets/refinedstorage/lang/nl_NL.lang
@@ -15,6 +15,9 @@ gui.refinedstorage:constructor=Constructor
 gui.refinedstorage:relay=Relais
 gui.refinedstorage:interface.import=Interface Import
 gui.refinedstorage:interface.export=Interface Export
+gui.refinedstorage:interface.export.explanation.0=Bovenste slots: items die je wilt exporten
+gui.refinedstorage:interface.export.explanation.1=Slot leegmaken: muisklik + SHIFT
+gui.refinedstorage:interface.export.explanation.2=Verhoog of verklein aantal: links/ rechts muisklik
 
 misc.refinedstorage:energy_stored=%d / %d RF
 misc.refinedstorage:energy_usage=Vebruik: %d RF/t
diff --git a/src/main/resources/assets/refinedstorage/textures/gui/interface.png b/src/main/resources/assets/refinedstorage/textures/gui/interface.png
index f5e1c90d1..052e3350b 100644
Binary files a/src/main/resources/assets/refinedstorage/textures/gui/interface.png and b/src/main/resources/assets/refinedstorage/textures/gui/interface.png differ