diff --git a/assets/substances/CH3COONa.tres b/assets/substances/CH3COONa.tres
index 8c98715..ebcd6c1 100644
--- a/assets/substances/CH3COONa.tres
+++ b/assets/substances/CH3COONa.tres
@@ -1,6 +1,7 @@
-[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://dr65qbkum4emy"]
+[gd_resource type="Resource" script_class="Substance" load_steps=3 format=3 uid="uid://dr65qbkum4emy"]
 
 [ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_551qc"]
+[ext_resource type="Resource" uid="uid://dn10p6rbdd7qb" path="res://assets/substances/CH3COOH.tres" id="2_2qskh"]
 
 [resource]
 script = ExtResource("1_551qc")
@@ -8,5 +9,8 @@ formula = &"CH_3COONa"
 scientific_name = &"Ацетат натрия"
 melting_point = 328.0
 boiling_point = 9999999999.0
+pHIonicOverrides = Dictionary[ExtResource("1_551qc"), float]({
+ExtResource("2_2qskh"): 4.8
+})
 color = Color(1, 1, 1, 1)
 metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/NH4OH.tres b/assets/substances/NH4OH.tres
new file mode 100644
index 0000000..9302418
--- /dev/null
+++ b/assets/substances/NH4OH.tres
@@ -0,0 +1,7 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://b2iqhriy265ik"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_ctlfr"]
+
+[resource]
+script = ExtResource("1_ctlfr")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/export_presets.cfg b/export_presets.cfg
index 863fad4..dfee77a 100644
--- a/export_presets.cfg
+++ b/export_presets.cfg
@@ -23,7 +23,7 @@ script_export_mode=2
 custom_template/debug=""
 custom_template/release=""
 debug/export_console_wrapper=1
-binary_format/embed_pck=true
+binary_format/embed_pck=false
 texture_format/s3tc_bptc=true
 texture_format/etc2_astc=false
 shader_baker/enabled=false
diff --git a/exports/lab-electrolyte.exe b/exports/lab-electrolyte.exe
index 16fce76..2b32d02 100644
Binary files a/exports/lab-electrolyte.exe and b/exports/lab-electrolyte.exe differ
diff --git a/exports/lab-electrolyte.pck b/exports/lab-electrolyte.pck
new file mode 100644
index 0000000..c412ce2
Binary files /dev/null and b/exports/lab-electrolyte.pck differ
diff --git a/exports/lab.zip b/exports/lab.zip
new file mode 100644
index 0000000..b71e7c4
Binary files /dev/null and b/exports/lab.zip differ
diff --git a/exports/test.zip b/exports/test.zip
deleted file mode 100644
index c035e75..0000000
Binary files a/exports/test.zip and /dev/null differ
diff --git a/src/resources/substance.gd b/src/resources/substance.gd
index 3b79e47..019ae8a 100644
--- a/src/resources/substance.gd
+++ b/src/resources/substance.gd
@@ -8,6 +8,7 @@ class_name Substance
 @export var boiling_point: float
 @export var liquid_transparency: float = 0.5
 @export var pH: float = 7.0
+@export var pHIonicOverrides: Dictionary[Substance,float]
 @export var color: Color
 @export var pHColor: Gradient
 @export var prefer_scientific_name: bool
@@ -15,3 +16,31 @@ class_name Substance
 
 func get_formula() -> StringName:
 	return scientific_name if prefer_scientific_name else formula
+
+func get_ph(context: Array[Substance]):
+	var overriden_value: float = 0
+	var overrides: int = 0
+	
+	for sub in context:
+		if pHIonicOverrides.has(sub):
+			overriden_value += pHIonicOverrides[sub]
+			overrides += 1
+	
+	if overrides > 0:
+		return overriden_value / overrides
+	else:
+		return pH
+
+func get_ph_runtime(context: Array[RuntimeSubstanceData]):
+	var overriden_value: float = 0
+	var overrides: int = 0
+	
+	for sub in context:
+		if pHIonicOverrides.has(sub.substance):
+			overriden_value += pHIonicOverrides[sub.substance]
+			overrides += 1
+	
+	if overrides > 0:
+		return overriden_value / overrides
+	else:
+		return pH
diff --git a/src/substance_display.gd b/src/substance_display.gd
index 38a9376..c1d0f95 100644
--- a/src/substance_display.gd
+++ b/src/substance_display.gd
@@ -26,7 +26,7 @@ func update_material(substances: Array[RuntimeSubstanceData]) -> void:
 	
 	for sub: RuntimeSubstanceData in substances:
 		var weight: float = sub.amount/total_weight
-		pH += sub.substance.pH * weight
+		pH += sub.substance.get_ph_runtime(substances) * weight
 	
 	for sub: RuntimeSubstanceData in substances:
 		var weight: float = sub.amount/total_weight